Ranunculus bulbosus
Ranunculus fascicularis
bulbous buttercup, bulbous crowfoot, renoncule bulbeuse, St. Anthony's-turnip
early buttercup, early crowfoot, prairie buttercup, tuft buttercup
never tuberous.
always both filiform and tuberous on same stem.
erect, never rooting nodally, strigose or hirsute, base bulbous and cormlike.
erect or ascending, never rooting nodally, strigose or spreading-strigose, base not bulbous.
blades ovate to cordate in outline, 3-foliolate, rarely merely deeply divided, 2–5.3 × 2.4–5.4 cm, leaflets 1–2x-lobed, ultimate segments oblong to obovate, margins toothed, apex rounded in outline.
blades ovate to broadly ovate in outline, 3-5-foliolate, 2.1-4.7 × 1.9-4.5 cm, leaflets undivided or 1x-lobed or -parted, ultimate segments oblanceolate or obovate, margins entire or with few teeth, apex rounded-acute to rounded-obtuse.
receptacle pubescent;
sepals reflexed 2–3 mm above base, 6–9 × 2–4 mm, pilose;
petals 5, yellow, 9–13 × 8–11 mm.
receptacle hispid or glabrous;
sepals spreading or sometimes reflexed from base, 5-7 × 2-3 mm, hispid or glabrous;
petals 5(-7), yellow, 8-14 × 3-6 mm.
ovoid, 6–9 × 5–7 mm;
achenes 2.2–3.2 × 2.2–2.8 mm, glabrous, margin forming narrow rib 0.1–0.2 mm wide;
beak persistent, lanceolate to deltate, 0.2–0.8 mm, slender tip hooked when present.
globose or ovoid, 5-9 × 5-8 mm;
achenes 2-2.8 × 1.8-2.2 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;
beak persistent, filiform, straight, 1.2-2.8 mm.
= 32.
Ranunculus bulbosus
Ranunculus fascicularis
Ranunculus bulbosus is native to Europe and the Near East but has become naturalized in many other parts of the world. It is considered an introduced weed in the flora.
The Iroquois used Ranunculus bulbosus as a toothache remede and as a a treatment for venereal disease (D. E. Moerman 1986).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Ranunculus fascicularis is very similar to R. hispidus var. hispidus, and herbarium specimens without underground parts may be difficult to identify. Ranunculus fascicularis grows in drier habitats; segments of its leaves are commonly oblanceolate and blunt, with few or no marginal teeth; and its petals are widest at or below the middle. Ranunculus hispidus var. hispidus is usually larger in all its parts (leaves, flowers, heads of achenes); leaf segments are variable in shape but their apices are normally sharper and their marginal teeth more numerous, and petals are widest above the middle.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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