|The roots of Ranunculus acris are hairy, fibrous, occasionally rhizomatous. Long stemmed leaves are basal, palmately lobed, mid-green, toothed, ovate, to 3 inches in length. Flowers of Flore Peno are in panicles, saucer-shaped, yellow, petals numerous, up to 1 inch wide. Plant grows to 8 to 36 inches tall and 9 inches wide. Up to 250 species of this tuber or fiberous rooted perennial, but really only 2 widely available. ly.