Ranunculus hispidus
Ranunculus glacialis
bristly buttercup, hispid crowfoot, renoncule hispide
glacier buttercup
never tuberous.
erect or decumbent, sometimes rooting nodally, hispid or strigose, base not bulbous.
erect or ascending from caudices, not rooting nodally, distally glabrous or brown-pilose, not bulbous-based.
blades ovate to deltate in outline, 3-foliolate or outer blades merely 3-parted, 2-13.4 × 2.4-16.8 cm, leaflets undivided to lobed or parted, ultimate segments narrowly elliptic or oblanceolate to circular, margins toothed, apex acuminate to rounded.
blades reniform to broadly triangular in outline, 3-foliolate or deeply 3-parted, 1-4 × 1.6-4.4 cm, leaflets or segments 1-2x-parted, ultimate segments elliptic to oblanceolate or almost linear, margins entire or occasionally with 1-2 teeth, apex rounded to obtuse.
receptacle hispid;
sepals spreading or reflexed, 4-10 × 2-5 mm, hispid;
petals 5, yellow, 8-16 × 3-9 mm.
receptacle glabrous or brown-pilose;
sepals spreading, 7-12 × 4-9 mm, brown-pilose;
petals initially white, usually becoming red with age, 9-15 × 7-14(-18) mm.
hemispheric to short-ovoid, 6-10 × 7-10 mm;
achenes 2.2-5.2 × 2-3.8 mm, glabrous, margin forming narrow rib or broad wing 0.1-1.2 mm wide;
beak persistent, lance-subulate, straight or somewhat curved, 0.8-2.6 mm.
roots absent.
heads hemispheric, 5-8 × 7-16 mm;
fruit wall smooth, not veined, loose but not inflated, winged along suture, fruits winged achenes;
achenes 2.6-3 × 1.4-2 mm, glabrous;
beak persistent, lanceolate, 0.8-2.3 mm.
Ranunculus hispidus
Ranunculus glacialis
Varieties 3
Until recently, the varieties of Ranunculus hispidus were usually treated as distinct species. Arguments for restoring species status to R. hispidus var. nitidus were given by G. L. Nesom (1993).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Stems erect or nearly erect, never rooting at nodes. | var. hispidus |
1. Stems decumbent, sometimes rooting at nodes. | → 2 |
2. Sepals spreading or reflexed from base; achene margins 0.1–0.2 mm broad. | var. caricetorum |
2. Sepals reflexed 1 mm above base; achene margins 0.4–1.2 mm broad. | var. nitidus |
1. Stems glabrous or with few hairs at nodes; caudices well-developed; basal leaves compound, ultimate segments elliptic to oblanceolate; receptacle glabrous; Greenland. | var. glacialis |
1. Stems distally brown-pilose; caudices short; basal leaves deeply parted or compound, ultimate segments oblanceolate to almost linear; receptacle brown-pilose; Alaska. | var. camissonis |
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