Cyanea is an epiphytic perennial with stemless rosettes of dark green leaves. Produces flatted, paddle-shaped spikes, rich violet flowers with spreading petels and rose-pink floral bracts. In g...

Gardneri is an epiphytic or rock-dwelling perennial with rosettes of triangular, scaly, silver gray leaves. Produces 4 to 12 spikes of 3 to 12 slender, funnel-shaped rose-pink to pale lavender-...

Ionantha is a free clustering, epiphytic perennial with rosesttes of scaly, grayish green leaves. Produces singular, tubular, violet-blue and white flowers with white floral bracts. In general,...

Aeranthos is a species that is a epiphytic, cushion-forming perennial. Leaves are gray-scaly and mid-green. Bears cylindrical spikes of 5 to 20 slender, funnel-shaped, dark blue flowers, 1 inch...

Bergeri is a rock-dwelling perennial with gray-scaly, mid-green leaves. It produces 7 to 12 funnel-shaped spikes with blue and white flowers, fading to rose-pink with gray-green floral bracts. ...

Sterling has a wide pyramidal crown, gray bark, silver-green young leaves, aging to dark green, silver-green underneath. The bark is smooth gray, eventually develops ridges and furrows. Foliage...

Large, deciduous tree with pale yellow flowers on pendant cymes. Broadly columnar habit with rounded leaves. Foliage is an attractive dark green, turns yellow in autumn, on a densely rounded cr...

Rubra has red winter shoots. Foliage is an attractive dark green, turning yellow in autumn, on a densely rounded crown. Flowers are yellowish white, on small, pendant cymes. Various cultivars a...

Princeton is widely pyramidal in shape, aging to pyramidal-oval with dark green leaves, silver-green underneath, turning yellow in the fall. Growth habit is upright and oval crowned, often has ...

Salem has a rounded crown, erect branches and deep green leaves. In general, Tilia cordata is a large deciduous tree. Growth habit is pyramidal in youth, dense and rounded in maturity. Gray bro...