Botanical Name to Common Name – P-Z

Phacelia tanacetifolia Bee Food Phacelia campanularia Desert Bluebells Phalaris canariensis Canary-grass Phalaris arundinacea Reed Canary Grass Phaseolus angularis Adzuki Bean Phaseolus Beans Phaseolus vulgaris var. nanus Bush Bean Phaseolus vulgaris Kidney Bean Phaseolus lunatus Lima Bush Beans Phaseolus vulgaris var. vulgaris Pole Bean Phaseolus coccineus Runner Beans Phaseolus acutifolius Tepary Beans Phellodendron amurense Amur cork tree Philadelphus lewisii Mock-orange Phlomis fruticosa Jerusalem Sage Phlomis cashmiriana Kashmirian Sage Phlomis tuberosus Tuberous Jerusalem Sage Phlox subulata Moss Pink Phoenix canariensis Canary Island Date Palm Phoenix dactylifera Date Phoradendron flavescens American Mistletoe Phormium tenax New Zealand Flax Photinia x fraseri Fraser Photinia Photinia japonica: Loquat Phragmites australis Common Reed Phragmites communis Reed grass Phyla alba Anise Verbena Phyla nodiflora Frogfruit Phyla scaberrina Lippia Phyllantus emblica Myrobalan Phyllitis scolopendrium Hart’s Tongue Phyllodoce empetriformis Pink mountain-heather Phyllodoce glanduliflora Yellow mountain-heather Physalis peruviana Gooseberry Physalis viscosa Ground Cherry Physalis Husk Tomato Physalis ixocarpa Tomatillo Physalis alkekengi Winter Cherry Physocarpus capitatus Pacific ninebark Physostegia False Dragonhead Physostegia virginiana False Dragonhead Physostigma venenosum Calabar Bean Phyteuma Horned Rampion Phyteuma spicatum Spiked Rampion Phytolacca americana Poke Root Picea pungens Colorado Blue Spruce Picea glauca Dwarf Alberta Spruce Picea engelmannii Engelmann Spruce Picea koraiensis Korean Pine Picea x lutzii Lutz spruce Picea abies Norway Spruce Picea sitchensis Sitka Spruce Picraena excelsa Quassia Picramnia antidesma Amarga Cascara Picrasma excelsa Quassia Picris hieracioides Hawkweed Ox-tongue Pieris japonica Japanese Pieris Pilea cadierei Aluminium Plant Pilea pumila Clearweed Pilocarpus jaborandi Jaborandi Pilocarpus microphyllus Jaborandi Pilocarpus pennatifolius Pernambuco Jaborandi Pimenta dioica Allspice Pimenta officinalis Allspice Pimenta officinalis: Allspice Pimpinella anisum Anise Pimpinella saxifraga Burnet Saxifrage Pimpinella major Greater Burnet Saxifrage Pinguicula vulgaris Butterwort Pinus nigra Austrian Pine Pinus aristata Bristlecone Pine Pinus roxburghii Chir Pine Pinus sabiniana Digger Pine Pinus pumila Dwarf Japanese Stone Pine Pinus thunbergiana Japanese Black Pine Pinus thunbergii Japanese Black Pine Pinus densiflora Japanese Red Pine Pinus parviflora Japanese White Pine Pinus koraiensis Korean Pine Pinus bungeana Lacebark Pine Pinus contorta var. latifolia Lodgepole pine Pinus radiata Monterey Pine Pinus mugo Mugo Pine Pinus pines Pinus sylvestris Scotch Pine Pinus contorta Shore pine Pinus lambertiana Sugar pine Pinus cembra Swiss Stone Pine Pinus torreyana Torrey Pine Pinus pinea Umbrella Pine Pinus ponderosa Western Yellow Pine Pinus monticola White Pine Pinus strobus White Pine Pinus albicaulis Whitebark pine Piper betel Betel Piper nigrum Black pepper Piper cubeba Cubebs Piper aduncum False Matico Piper auritum Holy Leaf Piper jaborandi Jaborandi Piper methysticum Kava Kava Piper longum Long Pepper Piper officinarum Long Pepper Piper pellucidum Pellucoid-leaved Pepper Piper amalago Rough-leaved Pepper Piper angustifolium True Matico Piper umbellatum Unbelled Pepper Pirus sinensis: Chinese quince Piscidia erythrina Jamaica Dogwood Pistacia chinensis Chinese Pistache Pistacia lentiscus Mastic Pistacia vera Pistachio Pisum sativum Peas Pisum sativum var. macrocarpon Sugar Pea Pittosporum undulatum Victorian Box Plantago coronopus Buck’s Horn Plantain Plantago asiatica: Common Plantain Plantago exaltata: Common Plantain Plantago loureiri: Common Plantain Plantago major Common Plantain Plantago major var. asiatica: Common Plantain Plantago media Hoary Plantain Plantago ovata Ispaghul Plantain Plantago amplexicaulis Ispaghula Plantago afra Psyllium Plantain Plantago lanceolata Ribwort Plantain Plantago arenaria Sand Plantain Plantago maritimo Sea Plantain Plantago argentea Silver Plantain Platanthera stricta Slender bog-orchid Platanthera dilatata White bog-orchid Platanus x acerifolia London Planetree Platycodon Balloon Flower Platycodon grandiflorus Balloon Flower Platycodon autumnalis: Balloon-flower Platycodon chinense: Balloon-flower Platycodon grandiflorum Balloon-flower Platycodon sinensis: Balloon-flower Plectranthus Cuban Oregano Plectranthus amboinicus Cuban Oregano Plectranthus nankinensis: Shiso Pleurophycus gardneri kelp Plumbago europaea Plumbago Plumeira alba Frangipani Plant Podophyllum peltatum American Mandrake Pogonopus febrifugus Cascarilla Pogostemon heyneanus Java Patchouli Pogostemon Patchouli Pogostemon cablin Patchouli Pogostemon patchouli: Patchouli Poinciana gilliesii Bird of Paradise Bush Poinciana pulcherrima Pride of Barbados Poinciana pulcherrima var. flava Yellow Dwarf Poinciana Polemonium reptans Abscess Root (USA) Polemonium viscosum Dwarf Jacob’s Ladder Polemonium foliosissimum Fern Leaf Jacob’s Ladder Polemonium caeruleum Jacob’s Ladder Polemonium carneum Salmon Jacob’s Ladder Polemonium pulcherrimum Sky Blue Jacob’s Ladder Polemonium pauciflorum Yellow Jacob’s Ladder Polianthes tuberosa Double Pearl Tuberose Poliomintha longiflora Rosemary-mint Polygala senega Senega Polygonatum biflorum American Solomon’s Seal Polygonatum canaliculatum Great Solomon’s Seal Polygonatum Solomon’s Seal Polygonatum commutatum Solomon’s Seal Polygonatum multiflorum Solomon’s Seal Polygonatum officinale Solomon’s seal Polygonum viviparum Alpine Knotweed Polygonum .. American Smartweed Polygonum aubertii China Fleece Vine Polygonum cymosum Chinese perennial Buckwh Polygonum convolvulus Climbing Buckwheat Polygonum bistorta Common bistort Polygonum sagittarum False Buckwheat Polygonum Fleece-flower Polygonum aviculare Knotweed Polygonum orientale Prince’s Plume Polygonum macrophyllum Red Knotweed Polygonum erectum Russian Knotgrass Polygonum arifoleum Sickle-grass Polygonum hydropiper Smartweed Polygonum tartaricum Tartary Buckwheat Polygonum odoratum Vietnamese Coriander Polygonum hydropiper ‘Fastigiatum’ Waterpepper Polymnia uvedalia American Bearsfoot Polypodium vulgare Common Polypody Polypodium dryopteris True Oak Fern Polystichum munitum Giant Holly Fern Polytrichum juniperum Hair Cap Moss Poncirus trifoliata Trifoliate orange Populus nigra Balm of Gilead (USA) Populus balsamifera Balsam Poplar Populus trichocarpa Balsam Poplar Populus balsamifera ssp. trichocarpa Black cottonwood Populus canescens Gray Poplar Populus Poplar Populus tremuloides Quaking Aspen Populus heterophylla Swamp Cottonwood Populus alba White Poplar Poria obliqua: Clinker polypore Porophyllum ruderale ssp.macrocepha Papaloquelite Porphyra umbilicalis Laver Seaweed Porphyra Nori Porphyra tenera Nori Porphyra yezoensis Nori Porphyra laciniata Seaweed Porphyra perforata Seaweed Porphyra vulgaris Seaweed Portulaca sativa Golden Purslane Portulaca oleracea Green Purslane Portulaca Moss Rose Portulaca grandiflora Moss Rose Portulaca oleracea subsp. sativa Summer Purslane Potentilla canadensis Dwarf Cinquefoil Potentilla reptans Five-leaf Grass Potentilla palustris marsh fivefinger Potentilla fruticosa shrubby cinquefoil Potentilla anserina Silverweed Potentilla tridentata Three-Toothed Cinquefoil Potentilla erecta Tormentil Potentilla tormentilla Tormentil Poterium officinale: Garden burnet Poterium sanguisorba Salad Burnet Primula auricula Auricula Primula farinosa Bird’s-eye Primrose Primula helodoxa Candelabrum Primrose Primula veris Cowslip Primula japonica Japanese Primrose Primula viallii Orchid Primrose Primula pulverulenta Powdered Primrose Primula Primrose Primula vulgaris Primrose Primula florindae Tibetan Primrose Primula acaulis True English Primrose Prinos verticillatus Black American Alder Prosopis dulcis Caroba Prosopis siliquastrum Caroba Prosopis Mesquite Prosopis pubescens Screw-bean Prunella grandiflora Prunella Loveliness Prunella Webbiana Purple Prunella Prunella vulgaris Self-heal Prunus armeniaca Apricot tree Prunus padus Bird Cherry Prunus dulcis var. amara Bitter Almond Prunus emarginata Bitter cherry Prunus serotina Black Cherry Prunus laurocerasus Cherry Laurel Prunus cerasifera Cherry Plum Prunus ilicifolia Holly-leaved Cherry Prunus maackii Manchurian Cherry Prunus persica Peach Prunus pensylvanica Pin Cherry Prunus lusitanica Portugal Laurel Prunus domestica Prunes Prunus x cistena Purpleleaf Sand Cherry Prunus sargentii Sargent Cherry Prunus spinosa Sloe Prunus cerasus Sour Cherry Prunus mahaleb St Lucie Cherry Prunus dulcis Sweet Almond Prunus serrula Tibetan Cherry Prunus avium Wild Cherry Prunus virginiana Wild Cherry Pseudocydonia sinensis: Chinese quince Pseudotsuga macrocarpa Bigcone Douglas-fir Pseudotsuga menziesii Douglas Fir Psidium Guava Psidium guajava Guava Psidium cattleianum Strawberry Guava Psoralea melilotoides Congo Root Psoralea esculenta Prairie Apple Psychotria emetica Black Ipecacuanha Ptelea trifoliata Wafer Ash Pteridium aquilinum Bracken Pterocarpus erinaceus African Kino Pterocarpus marsupium Bastard Teak Pterocarpus draco Guadaloupe Dragon’s Bloo Pterocarpus santalinus Red Saunders Pterocarpus angolensis West African Barwood Pterospora andromeda Albany Beech Drops Pueraria lobata Kudzu Vine Pueraria thunbergiana Kudzu vine Pulmonaria saccharata Betlehem Sage Pulmonaria montana Christmas Cowslip Pulmonaria officinalis Common Lungwort Pulmonaria angustifolia Cowslip Lungwort Pulmonaria mollissima Hairy Lungwort Pulsatilla alpina Alpine Anemone Pulsatilla nuttaliane American Pulsatilla Pulsatilla vulgaris Pasque Flower Pulsatilla vulgaris ‘Mixed colors’ Pasque Flower Pulsatilla vernalis Spring Anemone Punica granatum ‘Nana’ Dwarf Pomegranate Punica Pomegranate Punica granatum Pomegranate Pycnanthemum pycnanthemoides Hoary Mountain Mint Pycnanthemum Mountain Mint Pycnanthemum pilosum Mountain Mint Pycnanthemum teniufolium Narrow-leaved Mountain Mi Pycnanthemum virginianum Virginia Mint Pycnanthemum incanum Wild Basil Pyracantha Firethorn Pyracantha coccinea Scarlet Firethorn Pyrola minor Common Wintergreen Pyrola media Intermediate Wintergreen Pyrola rotundifolia Large Wintergreen Pyrola uniflora One-flowered Wintergreen Pyrola secunda Yevering Bells Pyrus americana: American Mountain-Ash Pyrus calleryana Callery Pear Pyrus fusca: Pacific crab apple Pyrus communis Pear Pyrus Pears Pyrus malus var. astracanica: Red Astrachan Apple Quamoclit x sloteri Cardinal Climber Quamoclit pennata Cypress Vine Quassia amara Surinam Quassia Quercus kelloggii California black oak Quercus pedunculata Common Oak Quercus robur Common Oak Quercus sessiliflora Durmast Oak Quercus ilex Evergreen Oak Quercus abelicea False Sandalwood Quercus garryana Garry oak Quercus coccifera Kermes Oak Quercus virens Live Oak Quercus virginiana Live Oak Quercus Oak Quercus palustris Pin Oak Quercus tinctoria Quercitron Bark Quercus petraea Sessile Oak Quercus cerris Turkey Oak Quercus alba White Oak Quillaria saponaria Soap Tree Quisqualis grandiflora: Rangoon creeper Quisqualis indica Rangoon creeper Quisqualis longifolia: Rangoon creeper Quisqualis loureiri: Rangoon creeper Quisqualis pubescens Rangoon creeper Quisqualis sinensis: Rangoon creeper Rabitida columnifera var. pulcherrima Red Mexican Hat Rabitida columnifera Yellow Mexican Hat Radiola linoides All-seed Ranunculus bulbosus Bulbous Buttercup Ranunculus sceleratus Celery-leaved Crowfoot Ranunculus edulis Egg-yolk Ranunculus ficaria Lesser Celandine Ranunculus flammula Lesser Spearwort Ranunculus rhomboideus Prairie Buttercup Ranunculus acris Upright Meadow Crowfoot Raphanus sativus ‘Acanthiformis’ Daikon Raphanus bipinnatus Daikon Radishes Raphanus caudatus Java Radish Raphanus sativus Radish Raphanus sibiricus Siberian Radish Raphanus raphanistrum Wild Radish Raphia farinifera Raffia Palm Ratibida Prairie Coneflower Ratibida pinnata Prairie Coneflower Ratibida columnifera Yellow Mexican Hat Rauvolfia serpentina Rauwolfia Rehmannia elata Chinese Foxglove Rehmannia glutinosa Rehmannia Reseda odorata Mignonette Reseda luteola Weld Rhamnus catharticus Buckthorn Rhamnus frangula Buckthorn Rhamnus Buckthorns Rhamnus purshianus Californian Buckthorn Rhamnus purshiana Cascara Sagrada Rhamnus zizyphus: Chinese jujube Rhamnus … Common Buckthorn Rheum palmatum subsp. tanguticum Chinese Rhubarb Rheum x cultorum Garden Rhubarb Rheum officinale Medicinal rhubarb Rheum rhabarbarum Rhubarb Rheum palmatum Turkey Rhubarb Rhinanthus crista-galli Yellow Rattle Rhodiola rosea Rose Root Rhodochiton atrosanguineum Purple Bell Vine Rhododendron hybr. Azalea Rhododendron calendulaceum Flame Azalea Rhododendron camtschaticum Kamchatka rhododendron Rhododendron tomentosum Marsh Tea Rhododendron catawbiense Mountain Rose Bay Rhododendron macrophyllum Pacific rhododendron Rhododendron Rhododendron Rhododendron albiflorum White-flowered rhododendr Rhododendron chrysanthum Yellow Rhododendron Rhodymenia palmata Dulse Rhus diversilobe Californian Poison Oak Rhus javanica: Chinese sumac Rhus osbeckii: Chinese sumac Rhus semialata Chinese sumac Rhus vernicifera Japanese lacquer tree Rhus trilobata Lemonade Sumac Rhus integrifolia Lemonberry Rhus copallinum Mountain Sumach Rhus toxicodendron Poison Ivy Rhus coriaria Sicilian Sumach Rhus glabra Smooth Sumach Rhus typhina Staghorn Sumach Rhus Sumacs Rhus verni Swamp Sumach Rhus aromatica Sweet Sumach Rhynchosia phaseoloides Semilla De Chintallahua Ribes nigrum Black Currant Ribes lacustre Black gooseberry Ribes Currants Ribes lobbii Gummy gooseberry Ribes acerifolium: Maple currant Ribes howellii Maple currant Ribes rubrum Red Currant Ribes triste Red swamp currant Ribes sanguineum Red-flowering currant Ribes viscosissimum Sticky currant Ribes bracteosum Stinky currant Ribes laxiflorum Trailing black currant Ribes sativum White currant Ribes divaricatum Wild gooseberry Ribes uva-crispa Wild Gooseberry Richardsonia scabra Undulated Ipecacuanha Ricinus communis Castor Oil Plant Ridolfia segetum False Caraway Rivea corymbosa Oliliuqui Robinia pseudacacia Black Locust Robinia Locust Roccella tinctoria Litmus Rocella tinctoria Cudbear Romneya coulteri Matilija Poppy Rorippa nasturtium-aquaticum Watercress Rosa x alba Alba Semiplena Rose Rosa chinensis var. minima Angel Rose Rosa gallica ‘Officinalis’ Apothecary’s Rose Rosa gymnocarpa Baldhip rose Rosa spinosissima Burnet Rose Rosa centifolia Cabbage Rose Rosa amygdalifolia: Cherokee rose Rosa cherokeansis: Cherokee rose Rosa cucumerina: Cherokee rose Rosa laevigana Cherokee rose Rosa sinica Ait.: Cherokee rose Rosa ternata: Cherokee rose Rosa trifoliata: Cherokee rose Rosa hystrix: Cherokee rose: Rosa chinensis China rose Rosa indica: China rose Rosa sinica: China rose Rosa pisocarpa Clustered wild rose Rosa x damascena Damask Rose Rosa canina Dog Rose Rosa villosa Downy Rose Rosa eglanteria Eglantine Rosa arvensis Field Rose Rosa moschata Himalayan Musk Rose Rosa rugosa Japanese Rose Rosa woodsii var. ultramontana Mountain Rose Rosa linkii: Multiflora rose Rosa multiflora Multiflora rose Rosa muscatta: Musk Rose Rosa nutkana Nootka rose Rosa centifolia var. muscosa Old Pink Moss Rose Rosa gallica Red Provins Rose Rosa gallica ‘Versicolor’ Rosa Mundi Rosa Rose Rosa gallica x centifolia Rose De Mai Rosa rubiginosa Sweet Briar Rose Rosa indica Tea Rose Rosa x damascena ‘Versicolor’ York And Lancaster Rose Rosmarinus angustifolia Pine Rosemary Rosmarinus Rosemary Rosmarinus officinalis Rosemary Rubia cordifolia Indian Madder Rubia mungista: Indian Madder Rubia tinctorum Madder Rubia peregrina Wild Madder Rubus villosus American Blackberry Rubus odoratus American Bramble Rubus leucodermis Black raspberry Rubus allegheniensis Blackberry Rubus fruticosus Blackberry Rubus chamaemorus Cloudberry Rubus caesius Dewberry Rubus lasiococcus Dwarf bramble Rubus acaulis: Dwarf nagoonberry Rubus arcticus Dwarf nagoonberry Rubus stellatus Dwarf nagoonberry Rubus laciniatus Evergreen blackberry Rubus pedatus Five-leaved bramble Rubus discolor Himalayan blackberry Rubus procerus: Himalayan blackberry Rubus glaucus Mora De Castilla Rubus cariensis Raspberry Rubus idaeus Raspberry Rubus strigosus raspberry Rubus mucronotoides Raspberry (Scottish) Rubus saxatilis Roebuck-berry Rubus spectabilis Salmonberry Rubus nivalis Snow bramble Rubus parviflorus Thimbleberry Rubus ursinus Trailing blackberry Rubus occidentalis Virginian Raspberry Rudbeckia hirta Black-eyed Susan Rudbeckia triloba Branched Coneflower Rudbeckia fulgida ‘Goldsturm’ Golden Coneflower Rudbeckia laciniata Greenheaded Coneflower Rudbeckia subtomentosa Sweet Black-eyed Susan Ruellia humilis Wild Petunia Rumex conglomeratus Clustered Dock Rumex acetosa Common Sorrel Rumex pulcher Fiddle Dock Rumex rugosus Garden Sorrel Rumex hydrolapathum Great Water Dock Rumex dentatus Indian Sorrel Rumex alpinus Monk’s Rhubarb Rumex aquaticus Red Dock Rumex sanguineus var. sanguineus Red-veined Dock Rumex obtusifolius Round-leaved Dock Rumex acetosella Sheep’s Sorrel Rumex scutatus True French Sorrel Rumex crispus Yellow Dock Ruscus aculeatus Butcher’s Broom Ruta graveolens Rue Sabal palmetto Cabbage Palmetto Sabal Palmetto Sabatia angularis American Centaury Sabatia campestris Centaury Sabatia elliottii Quinine Flower Sagina subulata Corsican Pearlwort Sagina Pearlwort Sagittaria sagittifolia Arrowhead Sagittaria latifolia Broad-leaved Arrowhead Saintpaulia ionantha African violet Salicornia europaea Glasswort Salicornia herbacea Jointed Glasswort Salisburia adianthifolia: Ginkgo Salisburia macrophylla: Ginkgo Salix alaxensis Alaska willow Salix arctica Arctic willow Salix barclayi Barclay’s willow Salix uva-ursi Bearberry Salix viminalis x dasyclados Biomass Willow Salix nigra Black American Willow Salix cascadensis Cascade willow Salix stolonifera Creeping willow Salix geyeriana Geyer’s willow Salix hookeriana Hooker’s willow Salix reticulata Netted willow Salix lasiandra: Pacific willow Salix lucida ssp. lasiandra Pacific willow Salix scouleriana Scouler’s willow Salix sitchensis Sitka willow Salix sessilifolia Soft-leaved sandbar willo Salix commutata Variable willow Salix babylonica Weeping Willow Salix alba White Willow Salix Willows Salpiglossis sinuata Paisley Flower Salsola kali Prickly Glasswort Salvia pomifera Apple-bearing Sage Salvia greggii Autumn Sage Salvia grandiflora Balsamic Sage Salvia mellifer Black Sage Salvia uliginosa Bog Sage Salvia apiana California White Sage Salvia fulgens Cardinal Sage Salvia roemeriana Cedar Sage Salvia columbariae Chia Salvia hispanica Chia Sage Salvia sclarea Clary Sage Salvia clevelandii Cleveland Sage Salvia officinalis Common Sage Salvia repens Creeping Sage Salvia jurisicii Feathered Salvia Salvia dorisiana Fruit Sage Salvia patens Gentian Sage Salvia officinalis ‘Aurea’ Golden Sage Salvia fruticosa Greek Sage Salvia glutinosa Hardy Sage Salvia officinalis ‘Holt’s Mammoth’ Holt’s Mammoth Sage Salvia lyrata Lyre-leaved Sage Salvia pratensis Meadow Sage Salvia farinacea Mealy-cup Sage Salvia leucantha Mexican Sage Salvia azurea New Mexico Sage Salvia discolor Peruvian Sage Salvia elegans Pineapple Sage Salvia rutilans Pineapple Sage Salvia spathacea Pitcher Sage Salvia officinalis ‘Purpurascens’ Purple Garden Sage Salvia officinalis ‘Purpurea’ Purple Sage Salvia viridis Red-topped Sage Salvia involucrata Roseleaf Sage Salvia Sage Salvia coccinea Scarlet Sage Salvia argentea Silver Sage Salvia lavandulifolia Spanish Sage Salvia triloba Spanish Sage Oil Salvia tiliaefolia Tarahumara Chia Sage Salvia transylvanica Transylvanian Sage Salvia officinalis ‘Tricolor’ Tricolor Sage Salvia verbenaca Vervain Sage Salvia verticillata Whorled Clary Salvia horminoides Wild Clary Sambucus canadensis American Elder Sambucus racemosa ssp. pubens var. melanocar Black elderberry Sambucus glauca Blue Elder Sambucus caerulea Blue elderberry Sambucus ebulus Dwarf Elder Sambucus Elder Sambucus nigra Elder Sambucus racemosa ssp. pubens Red elderberry Sambucus melanocarpa Red-berried American Eld Sambucus rubens Red-berried American Eld Sambucus racemosa Red-berried Elder Sangiusorba minor Salad Burnet Sanguinaria canadensis Bloodroot Sanguisorba Burnet Sanguisorba carnea: Garden burnet Sanguisorba officinalis Great Burnet Sanguisorba minor Salad Burnet Sanicula europaea Wood Sanicle Santalum Sandalwood Santalum album White sandalwood Santalum myrtifolium: White sandalwood Santalum verum: White sandalwood Santolina chamaecyparissus ‘Nana’ Dwarf Santolina Santolina incana Gray Santolina Santolina virens Green Santolina Santolina chamaecyparissus Lavender Cotton Santolina neapolitana Neapolitan Santolina Santolina rosmarinifolia Rosemary Santolina Sanvitalia procumbens Creeping zinnia Sapium sebiferum Chinese Tallow Sapium salicifolium Tallow Tree Saponaria vaccaria Cowherd Saponaria ocymoides Rock Soapwort Saponaria Soapwort Saponaria officinalis Soapwort Sarenoa serrulata Saw Palmetto Sarothamnus scoparius Broom Sarracenia purpurea Pitcher Plant Sarsaparilla officinalis Caracao Sarsaparilla Sassafras albidum Sassafras Sassafras officinale: Sassafras Satureja calamintha Calamint Satureja repandra Creeping Savory Satureja biflora Lemon Savory Satureja thymbra Persian Zatar Satureja Savory Satureja hortensis Summer Savory Satureja montana Winter Savory Satureja douglasii Yerba buena Saussurea lappa Costus Saxifraga micranthidifolia Deertongue Saxifraga x arendsii Saxifrage Scabiosa columbaria Lesser Scabious Scabiosa stellata Moonflower Scandix cerefolium Chervil Schefflera arboricola Dwarf Schefflera Schinopsis lorenzii Quebracho Wood Schinus terebinghifolius Brazilian Pepper Tree Schinus molle California Pepper Tree Schinus Pink Peppercorns Schisandra chinensis Schisandra Schizanthus Butterfly Flower Schizanthus pinnatus Butterfly Flower Schlumbergera bridgesii Christmas Cactus Schoenoplectus lacustris Great Club-rush Schotia Boerboom Schotia brachypetala Tree Fuchsia Sciadopitys verticillata Umbrella Pine Scirpus saetaceus Bristle-like Mud-rush Scirpus nanus Dwarf Club-rush Scirpus fluitans Floating Mud-rush Scirpus holoschoeuus Round-headed Mud-rush Scirpus cernuus Savi’s Mud-rush Scoliopus hallii Slink lily Scolymus cardunculus Cardoon Artichoke Scolymus … Yellow Thistle Scoparia dulcis Vacourinha Scopolia carniolica Scopolia Scorodosma foetida Asafetida Scorzonera hispanica Black Salsify Scorzonera exile Wild Salsify Scrophularia scorodoma Balm-leaved Figwort Scrophularia Figwort Scrophularia nodosa Knotted Figwort Scrophularia aquatica Water Figwort Scrophularia vernalis Yellow Figwort Scutellaria grandiflora: Baical skullcap Scutellaria lanceolaria: Baical skullcap Scutellaria macrantha: Baical skullcap Scutellaria baicalensis Baikal Skullcap Scutellaria galericulata Common Scullcap Scutellaria minor Lesser Scullcap Scutellaria lateriflora Virginian Scullcap Scytalia chinensis: Litchi Sedum morganianum Burro’s tail Sedum acre Common Stonecrop Sedum reflexum Crooked Yellow Stonecrop Sedum villosum Hairy Stonecrop Sedum telephium Orpine Stonecrop Sedum Stonecrop Sedum sexangulare Tasteless Yellow Stonecro Sedum dasyphyllum Thick-leaved Stonecrop Sedum fosterianum Welsh Stonecrop Sedum album White Stonecrop Sedum anglicum White-flowered Stonecrop Semecarpus anacardium Oriental Cashew Nut Sempervivum Houseleek Sempervivum tectorum Houseleek Senecio x hybridus Cineraria Senecio vulgaris Common Groundsel Senecio erucifolius Hoary Groundsel Senecio aureus Life Root Senecio aquaticus Marsh Ragwort Senecio sylvaticus Mountain Groundsel Senecio jacobaea Ragwort Senecio triangularis Ragwort Senecio bicolor Sea Ragwort Senecio viscosus Viscid Groundsel Sequoia sempervirens Coast Redwood Sequoiadendron gigantea Giant Redwood Sequoiadendron giganteum Giant Sequoia Serenoa repens Saw Palmetto Serissa foetida Serissa Sesamum indicum Sesame Sesamum orientale Sesame Sesamum orientale: Sesame Sesbania grandiflora Vegetable Hummingbird Sesbania cannabina Yellow Pea-bush Setaria italica Foxtail Millet Shepherdia canadensis Soopolallie Sicana odorifera Cassabanana Siegesbeckia orientalis Siegesbeckia Silene cucubalus Bladder Campion Silene Campion Silene armeria None So Pretty Silene regia Royal Catchfly Silphium laciniatum Compass Plant Silphium perfoliatum Cup Plant Silphium terebinthinaceum Prairie Dock Silphium ginniferum Rosin Weed Silphium integrifolium Rosinweed Silphium paciniatum Rosin-weed Silybum Milk Thistle Silybum marianum Milk Thistle Silybum eburneum Silver Milk Thistle Simaba cedron Cedron Simaruba amara Simaruba Simaruba officinalis Simaruba Simaruba versicolor Simaruba (Brazil) Simaruba glauca Wing-leaved Quassia Simmondsia chinensis Jojoba Sinapis arvensis Field Mustard Sinapis alba White Mustard Sirium myrtifolium: White sandalwood Sison amomum Breakstone Sisymbrium officinale Common Hedge Mustard Sisymbrium sofia Flixweed Sisyrinchium Blue-eyed Grass Sisyrinchium angustifolium Blue-eyed Grass Sisyrinchium idahoense var. macounii Blue-eyed-grass Sisyrinchium californicum Golden-eyed-grass Sisyrinchium douglasii Satin-flower Sisyrinchium littorale Shore blue-eyed-grass Sium sisarum Skirret Sium latifolium Water Parsnip Smilacina racemosa False Solomon’s Seal Smilacina stellata Star-flowered false Solom Smilax china China Smilax Smilax pseudo-china China Smilax Smilax Greenbrier Smilax spruceana Guatemala Sarsaparilla Smilax officinalis Honduras Sarsaparilla Smilax aspera Italian Sarsaparilla Smilax ornata Jamaica Sarsaparilla Smilax anceps Mauritius Sarsaparilla Smilax rotundifolia Mexican Sarsaparilla Smyrnium olusatrum Alexanders Solanum mammosum Apple of Sodom Solanum sodomaeum Apple of Sodom Solanum nigrum Black Nightshade Solanum melongena var. esculentum Egg Plant Solanum melongena Eggplants Solanum carolinense Horsenettle Solanum oleraceum Jagueribo Solanum pseudo-capsicum Jerusalem Cherry Solanum xanthocarpum Kantikari Solanum aculeatissimum Loveapple Solanum quitoense Naranjilla Solanum tuberosum Potato Solanum integrifolium Ruffled Red Eggplant Solanum melanocerasum Sunberry Solanum laciniatum Tasmanian Kangaroo Apple Solanum erianthum Tobacco Nightshade Solanum dulcamara Woody Nightshade Solidago canadensis golden rod Solidago virgaurea Golden Rod Solidago Goldenrod Solidago rigida Hardleaf Goldenrod Solidago glomerata Ornamental Goldenrod Solidago speciosa Showy Goldenrod Solidago gigantea Smooth Three-ribbed Golde Solidago odora Sweet-scented Goldenrod Sollya heterophylla Australian Bluebell Creep Sollya Bluebell Creeper Sonchus oleraceus Common Sow-thistle Sonchus arvensis Corn Sow-thistle Sonchus palustris Marsh Sow-thistle Sonchus alpina Mountain Sow-thistle Sonchus tartaricus Siberian Sow-thistle Sophora secundiflora Mescal Bean Sophora japonica Pagoda tree Sophora tomentosa Silverbush Sorbus americana American Mountain Ash Sorbus aria Common Whitebeam Sorbus aucuparia Mountain Ash Sorbus aucuparia var. moravica Rowan Sorbus domestica Service-tree Sorbus sitchensis Sitka mountain-ash Sorbus scopulina Western mountain-ash Sorbus torminalis Wild Service-tree Sorghastrum Indiangrass Sorghastrum nutans Indiangrass Sorghum bicolor Broomcorn Sorghum vulgare Broom-Corn Sorghum nigrum Ornamental Grass Sorghum Sorghum Sorreya californica Californian Nutmeg Spartina stricta Common Cord-grass Spartina towsendi Many-spiked Cord-grass Spartina pectinata Prairie Cordgrass Spartium junceum Spanish Broom Spathodea campanulata Flame Tree Specularia speculum-veneris Venus’s Looking Glass Sphaerostema japonica: Schisandra Sphagnum sphagnum moss Sphagnum cymbifolium Sphagnum Moss Spigelia marylandica Pink Root Spilanthes acmella Toothache Plant Spilanthes oleracea Toothache Plant Spinaca oleracea Spinach Spiraea douglasii Hardhack Spiraea menziesii: Hardhack Spiraea tomentosa Hardhack Spiraea x vanhouttei Spirea Spiraea bauverdiana: Steven’s spirea Spiraea stevenii Steven’s spirea Spiraea densiflora Subalpine spirea Spiraea salyciflora Willow-leaved Spirea Spiranthes autumnalis Lady’s Tresses Spondias dulcis Oatahette Apple Sporobolus heterolepis Prairie Dropseed Sporobolus cryptandrus Sand Dropseed Stachys Betony Stachys scardia Betony Stachys sieboldii Chinese Artichoke Stachys monnieri Dense-flowered Betony Stachys arvensis Field Stachys Stachys sylvatica Hedge Woundwort Stachys palustris Marsh Woundwort Stachys grandiflora Showy Betony Stachys germanica True Woundwort Stachys betonica Wood Betony Stachys officinalis Wood Betony Stachys byzantina Woolly Lamb’s Ear Stachytarpetha jamaicensis Blue Porter Weed Statice caroliniana American Sea Lavender Stellaria media Chickweed Stellaria Stitchwort Stenanthium occidentale Mountainbells Stevia rebaudiana Stevia Stewartia pseudocamellia Japanese Stewartia Sticta pulmonaria Lungwort Stillinga sylvatica Queen’s Delight Stipa Feather Grass Stipa pennata Feather Grass Stipa capillata Needlegrass Stipa lepida Small Feathergrass Stratiotes aloides Water Soldier Strelitzia reginae Bird of Paradise Strelitzia nicolai White Bird of Paradise Streptopus amplexifolius Clasping twistedstalk Streptopus roseus Rosy twistedstalk Streptopus streptopoides Small twistedstalk Strophanthus gratus Strophantus Strophanthus hispidus Strophantus Strophanthus kombé Strophantus Strophanthus nicholsoni Strophantus Strychnos pseudo Clearing Nuts Strychnos toxifera Curare Strychnos ignatii Ignatius Beans Strychnos nux-vomica Strychnine tree Strychnos tieute Upas Tieute Stylomecon heterophylla Wind Poppy Stylophorum diphyllum Nuttall Styphnolobium japonicum: Pagoda tree Styrax Benzoin Styrax benzoin Benzoin Styrax japonicus Japanese Snowbell Styrax officinale Storax Succisa pratensis Devil’s Bit Scabious Suoeda maritima Annual Sea Blite Suoeda fruticosa Sea-Blite Suoeda Sea-blites Sutherlandia Cape Bladder Senna Sutherlandia frutescens Duck Plant Swainsonia galegifolius Swainson’s Pea Swertia chirata Chiretta Symphoricarpos racemosus Snowberry Symphoricarpos mollis Trailing snowberry Symphoricarpos albus Waxberry Symphytum Comfrey Symphytum grandiflorum Comfrey Symphytum tuberosum Comfrey Symphytum officinale Common Comfrey Symphytum asperum Prickly Comfrey Symphytum rubrum Red Comfrey Symphytum x uplandicum Russian Comfrey Symplocarpus foetidus Skunk-cabbage Syringa Lilac Syringa vulgaris Lilacs Syringa suspensa: Weeping golden bell Syzygium aromaticum Cloves Tabebuia impetiginosa Pau d’arco Tacca oceanica Tahiti Arrowroot Tagetes erecta African Marigold Tagetes patula ‘Sparky’ French Marigold Tagetes filifolia Irish Lace Marigold Tagetes tenuifolia Lemon Marigold Tagetes Marigold Tagetes minuta Mexican Marigold Tagetes lucida Mexican Mint Marigold Talinum Fame Flower Talinum paniculatum Jewels of Opar Tamarindus indica Tamarind Tamarix gallica var. mannifera Tamarisk Manna Tamus communis Black Bryony Tamus cretica Bryony Tanacetum balsamita Costmary Tanacetum vulgare ‘Crispum’ Curled Tansy Tanacetum cinerariifolium Dalmatian Pellitory Tanacetum parthenium Feverfew Tanacetum parthenium ‘Aureum’ Golden Feverfew Tanacetum coccineum Persian Pellitory Tanacetum niveum Silver Tansy Tanacetum vulgare Tansy Tapeinochillis ananassae Malaysian Spiral Ginger Taraktogenos kurzii Chaulmoogra Taraxacum Dandelion Taraxacum ceratophorum: Dandelion Taraxacum corniculatum: Dandelion Taraxacum dens-leonis: Dandelion Taraxacum officinale Dandelion Taraxacum sinense: Dandelion Taraxacum officinale var. sativum Improved Dandelion Taxodium distichum Baldcypress Taxus brevifolia Western yew Taxus Yew Tecoma grandiflora: Chinese trumpet-creeper Tecoma stans Trovadora Telekia speciosa Heartleaf Oxeye Tellima Fringe Cup Tellima grandiflora Fringe Cups Templetonia retusa Cock’s Comb Templetonia Coral Bush Tetragonia expansa: New Zealand Spinach Tetragonia tetragonioides New Zealand Spinach Tetrapanax papyrifera Rice-paper tree Teucrium marum Cat Thyme Teucrium canadense Creeping Germander Teucrium polium Ezovion Teucrium Germander Teucrium scorodonia Sage-leaved Germander Teucrium fruticans Silver Germander Teucrium chamaedrys Wall Germander Teucrium scordium Wood Sage Thalictrum Meadow Rue Thalictrum dasycarpum Meadowrue Thapsia garganica Thapsia Thea assamica: Tea plant Thea bohea: Tea plant Thea cantoniensis: Tea plant Thea chinensis: Tea plant Thea cochinchinensis: Tea plant Thea sinensis Tea plant Thea sinensis: Tea plant Thea stricta jassamica: Tea plant Thea veridis: Tea plant Thea viridis: Tea plant Theobroma cacao Cacao Thermopsis caroliniana Carolina Lupin Thermopsis Mountain Pea Thermopsis montana Mountain Thermopsis Thermopsis fabacea Russian False Lupin Thermopsis lupinoides Siberian Lupin Thespesia populnea Portia Tree Thlaspi arvense Pennycress Thlaspi rotundifolium Round-leaved Pennycress Thuja Cedar Thuja orientalis Chinese Arbor Vitae Thuja plicata Red Cedar Thuja articulata Sandarac Thuja occidentalis Yellow Cedar Thunbergia alata Black-eyed Susan Thunbergia Clock Vine Thymbra spicata Spiked Thyme Thymus herba-barona Caraway Thyme Thymus praecox Creeping Thyme Thymus praecox subsp. arcticus Crimson Thyme Thymus praecox subsp. arcticus ‘Coccineus’ Crimson Thyme Thymus vulgaris ‘Doretta Klaber’ Doretta Klaber Thyme Thymus vulgaris Garden Thyme Thymus thracicus Lavender Thyme Thymus thracius Lavender Thyme Thymus x citriodorus Lemon Thyme Thymus pulegioides Mother of Thyme Thymus zygis Sauce Thyme Thymus mastichina Spanish Wood Marjoram Thymus Thyme Thymus praecox subsp. arcticus ‘Albus’ White Moss Creeping Thyme Thymus drucei Wild Thyme Thymus serpyllum Wild Thyme Thymus pseudolanuginosus Woolly Thyme Thymus praecox subsp.arcticus var.pseudola Wooly Thyme Tiarella cordifolia Coolwort Tilia americana American Linden Tilia vulgaris Common Lime Tilia europaea Lime Tilia Lime Tree Tilia platyphyllos Lime Tree Tilia x vulgaris Lime Tree Tilia cordata Littleleaf Linden Tilia heterophylla White Basswood Tithonia Mexican Sunflower Tithonia rotundifolia Mexican Sunflower Tithonia speciosa Mexican Sunflower Tofieldia False Asphodel Tofieldia palustris Scotch Asphodel Tofieldia glutinosa Sticky false asphodel Toxylon pomiferum Osage Orange Trachelium coeruleum Throatwort Trachelospermum divaricatum: Star jasmine Trachelospermum jasminoides Star jasmine Trachycarpus excelsa: Hemp palm Trachycarpus fortunei Hemp palm Trachyspermum ammi Ajowan Tradescantia ohiensis Spiderwort Tragopogon pratensis Jack-go-to-bed-at-noon Tragopogon porrifolius Salsify Trapa natans Water Chestnut Trichocereus pachanoi San Pedro Cactus Trichophorum cespitosum Deer’s Hair Trichosanthes japonica Chinese Cucumber Trichosanthes kirilowii Chinese Cucumber Trichosanthes palmata: Chinese cucumber Trichosanthes rosthornii Chinese Cucumber Trichosanthes anguina Snake Gourd Tricyrtis hirta Toad Lily Trientalis europaea Chickweed Wintergreen Trifolium incarnatum Crimson Clover Trifolium pratense Red Clover Trifolium repens White Clover Trigonella foenum-graecum Fenugreek Trillium pendulum Bethroot Trillium grandiflorum Large-flowered Trillium Trillium chloropetalum Sessile trillium Trillium hibersonii: Western trillium Trillium ovatum Western trillium Tripleurospermum inodorum Scentless Mayweed Tripsacum dactyloides Eastern Gama Grass Triteleia laxa Grass Nut Triteleia howellii: Howell’s brodiaea Triticum vulgare Common wheat Triticum Wheat Triticum aestivum Wheat Trollius asiaticus Asiatic Globe Flower Trollius laxus Globe Flower (USA) Tropaeolum peregrinum Canary Bird Vine Tropaeolum minus Empr of India Nasturtium Tropaeolum Nasturtium Tropaeolum majus Nasturtium Tsuga canadensis Hemlock Spruce Tsuga mertensiana Mountain Hemlock Tsuga heterophylla Western Hemlock Tulbaghia violacea Society Garlic Tulipa edulis Edible tulip Tulipa graminifolia: Edible tulip Tunica saxifraga Coat Flower Tunica Tunic Flower Turnera aphrodisiaca Damiana Turnera diffusa Damiana Tussilago farfara Coltsfoot Typha   Cattail Typha latifolia Cattail Typha domingensis tule cattail Ulex europaeus Golden Gorse Ulmus chinensis Chinese Elm Ulmus procera Common Elm Ulmus campestris English elm Ulmus glabra English elm Ulmus parvifolia Lacebark Elm Ulmus scabra Scotch Elm Ulmus fulva Slippery Elm Ulmus rubra Slippery Elm Ulmus alata Winged Elm Ulva lactuca Sea Lettuce Umbellularia californica California Bay Umbilicus rupestris Pennywort Uncaria gambir Pale Catechu Ungnadia speciosa Texan Buckeye Urginea indica Indian Squill Urginea scilla Squill Urginea maritima White Squill Urtica tenacissima: China grass Urtica utilis: China grass Urtica dioica Greater Nettle Urtica canadensis Kentucky Hemp Urtica cannabina Kentucky Hemp Urtica urens Lesser Nettle Urtica   Nettle Usnea   Old man’s beard Vaccaria   Cockle Vaccaria segetalis Cowcockle Vaccinium alaskaense Alaskan blueberry Vaccinium myrtillus Bilberry Vaccinium membranaceum Black huckleberry Vaccinium   Blueberry Vaccinium deliciosum Blue-leaved huckleberry Vaccinium ovatum California Huckleberry Vaccinium oxycoccus Cranberry Vaccinium macrocarpum Cranberry (Am.) Vaccinium caespitosum Dwarf blueberry Vaccinium arboreum Farkleberry Vaccinium corymbosum Highbush Blueberry Vaccinium vitis-idaea lingonberry Vaccinium angustifolium Lowbush Blueberry Vaccinium uliginosum Northern Bilberry Vaccinium ovalifolium Oval-leaved blueberry Vaccinium parvifolium Red huckleberry Valeriana cornucopiae African Valerian Valeriana cornucopiae: African Valerian Valeriana montana Dwarf Valerian Valeriana edulis edible valerian Valeriana pyrenaica Heart-leaved Valerian Valeriana wallichii Indian Valerian Valeriana dioica Marsh Valerian Valeriana mexicana Mexican Valerian Valeriana jatamansi Nard Valeriana sitchensis Sitka Valerian Valeriana   valerian Valeriana officinalis Valerian Valeriana sylvestris: Valerian Valeriana aquatica Water Valerian Valerianella locusta Corn Salad Vanilla planifolia Vanilla Venidium fastuosum Monarch of the Veldt Venidium fastuosum alba Zulu Prince Veratrum nigrum Black False Hellebore Veratrum californicum California false hellebor Veratrum   False Hellebore Veratrum viride Green Hellebore Veratrum officinale Sabadilla Veratrum sabadilla Sabadilla Veratrum album White Hellebore Verbascum chaixii Chaix Mullein Verbascum nigrum Dark Mullein Verbascum densiflorum Dense Mullein Verbascum thapsus Great Mullein Verbascum wiedemannianum Indigo Mullein Verbascum longifolium Long-leaved Mullein Verbascum blattaria Moth Mullein Verbascum phoenicum Ornamental Mullein Verbascum phlomoides Pale Yellow Mullein Verbascum bombyciferum Silver Mullein Verbascum blattaria var. albiflorum White Moth Mullein Verbascum x hybridum White Spiked Mullein Verbascum thapsiforme Wool Mullein Verbena hastata Blue Vervain Verbena lappulaceae Burry Vervain Verbena stricta Hoary Vervain Verbena jamaicensis Jamaica Vervain Verbena canadensis Rose Verbena Verbena   Vervain Verbena officinalis Vervain Verbena urticifolia White Vervain Vernonia fasciculata Ironweed Vernonia noveboracensis Ironweed Veronica alpina Alpine Speedwell Veronica americana American veronica Veronica subsessilis Bright Blue Speedwell Veronica beccabunga Brooklime Veronica officinalis Common Speedwell Veronica repens Creeping Speedwell Veronica bellidioides Dwarf Blue Speedwell Veronica triphyllos Finger Speedwell Veronica gentianoides Gentian Blue Speedwell Veronica chamaedrys Germander Speedwell Veronica austriaca ssp.teucrium Germander-leav Speedwell Veronica hederifolia Ivy-leaved Speedwell Veronica longifolia Long-leaved Speedwell Veronica scutellata Marsh Speedwell Veronica agrestis Procumbent Speedwell Veronica saxatilis Rock Veronica Veronica incana Silver Speedwell Veronica spicata Spiked Speedwell Veronica serpyllifolia Thyme-leaved Speedwell Veronica verna Vernal Speedwell Veronica arvensis Wall Speedwell Veronicastrum virginicum Culver’s Root Vetiveria zizanioides Vetiver Grass Viburnum prunifolium Black-haw Viburnum plicatum Doublefile Viburnum Viburnum opulus Guelder Rose Viburnum sterile Guelder Rose Viburnum trilobum Highbush-cranberry Viburnum rhytidophyllum Leatherleaf Viburnum Viburnum ellipticum Oval-leaved viburnum Viburnum edule Squashberry Viburnum lentago Wild Raisin Viburnum cassinoides Witherod Vicia faba Fava Bean Vigna unguiculata Asparagus Bean Vigna unguiculata var. sesquipedalis Asparagus Bean Vigna aconitifolia Moth Beans Vigna umbellata Rice Bean Vigna mungo Urdi Black Bean Viminaria denudata Golden Spray Vinca major Greater Periwinkle Vinca minor Lesser Periwinkle Vinca   Periwinkle Viola pedata Bird-foot Violet Viola dissecta var. chaerophylloides Cutleaf Japanese Violet Viola canina Dog Violet Viola hirta Hairy Violet Viola tricolor Heartsease Viola cornuta Horned Violet Viola palustris Marsh Violet Viola alba Parma violet Viola odorata Sweet Violet Viola   Violet Viscum album Mistletoe Vitex trifolia Three-leaved Chaste Tree Vitex agnus-castus Vitex Vitex negundo Vitex Vitex negundo var. heterophylla Vitex Vitis californica Californian Wild Grape Vitis cordifolia Chickengrape Vitis   Grape Vitis riparia Riverside Vine Vitis vinifera Vine Vitis hederacea Virginia Creeper Vitis labrusca Wild Vine Waltheria glomerata False Matico Washingtonia filifera California Fan Palm Weigela florida Weigela Whipplea modesta Whipplevine Wisteria floribunda Japanese Wisteria Withania somnifera Ashwagandha X Cupressocyparis leylandii Leyland Cypress Xanthium spinosum Cocklebur Xanthorroea australis Australian Grass Tree Xanthoxylum piperitum Japanese prickly ash Xeranthemum   Immortelle Xeranthemum annuum Immortelle Xerophyllum tenax Bear-grass Yucca filamentosa Adam’s Needle Yucca brevifolia Joshua-tree Yucca elata Soaptree Yucca aloifolia Spanish Bayonet Yucca glauca Spanish Bayonet Yucca whipplei Spanish Bayonet Yucca baccata Wild Date Yucca   Yucca Zantedeschia   Calla Lily Zantedeschia aethiopica Common Calla Lily Zanthoxylum piperitum Japan Pepper Zanthoxylum americanum Prickly Ash Zanthoxylum clava-herculis Prickly Ash Zea   Corn Zea diploperennis Diploid Perennial Teosint Zea mays Indian Corn Zelkova serrata Japanese Zelkova Zingiber officinale Ginger Zingiber fairchildii Red Pine Cone Ginger Zingiber darceyi Variegated Leaf Ginger Zizania aquatica Wild Rice Zizania palustris Wild Rice Zizia aurea Golden Alexander’s Zizyphus sativa: Chinese jujube Zizyphus vulgaris: Chinese jujube Zizyphus zizyphus: Chinese jujube Zizyphus jujuba Jujube Zizyphus jujuba var. spinosa Jujube Zygadenus venenosus Meadow death-camas