Ranunculus bulbosus |
Ranunculus sulphureus |
|
---|---|---|
bulbous buttercup, bulbous crowfoot, renoncule bulbeuse, St. Anthony's-turnip |
renoncule soufrée, sulphur buttercup |
|
Roots | never tuberous. |
slender, 0.4-1 mm thick. |
Stems | erect, never rooting nodally, strigose or hirsute, base bulbous and cormlike. |
erect from short caudices, 3-20 cm, sparsely pilose to glabrous, each with 1-3 flowers. |
Basal leaves | 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. |
persistent, blades transversely elliptic to orbiculate, 1-3 × 1-3 cm, base obtuse to nearly truncate, margins crenate or else blades shallowly 3-lobed with crenate lateral lobes, apex rounded or rounded-apiculate. |
Flowers | receptacle pubescent; sepals reflexed 2–3 mm above base, 6–9 × 2–4 mm, pilose; petals 5, yellow, 9–13 × 8–11 mm. |
pedicels sparsely brown-pilose; receptacle brown-pilose; sepals 6-8 × 3-6 mm, abaxially densely brown-hispid; petals 5(-6), 8-12 × 6-10 mm; nectary scale glabrous. |
Heads of achenes | 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. |
ovoid-cylindric or ovoid, 6-7(-9) × 5-6 mm; achenes 1.8-2.2 × 1.4-1.8 mm, glabrous or sparsely brown-hispid; beak slender, straight or curved, 0.8-1.4 mm. |
2n | = 42, ca. 80, ca. 84, 96, ca. 98. |
|
Ranunculus bulbosus |
Ranunculus sulphureus |
|
Phenology | Flowering spring (Apr–Jun). | Flowering late spring–summer (Jun–Sep). |
Habitat | Meadows | Meadows and seepy slopes, often around late snowbeds, bogs, and streamsides |
Elevation | 0–700 m (0–2300 ft) | 0-1100 m (0-3600 ft) |
Distribution |
AL; AR; CA; CT; DC; DE; GA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MO; NC; NE; NH; NJ; NY; OH; OR; PA; RI; SC; TN; VA; VT; WA; WV; BC; NF; NS; ON; QC; South America; native to Eurasia; Pacific Islands; Australia [Introduced in North America]
|
AK; BC; NF; NT; QC; YT; Greenland; Eurasia |
Discussion | 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.) |
Material of Ranunculus sulphureus from the Aleutian Islands has 3-lobed leaves similar to those of R. nivalis. These plants are sometimes separated as R. sulphureus var. intercedens. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Epirotes |
Sibling taxa | ||
Synonyms | R. bulbosus var. dissectus, R. bulbosus var. valdepubens | R. sulphureus var. intercedens |
Name authority | Linnaeus: Sp. Pl. 1: 554. (1753) | Solander: in C. J. Phipps, Voy. North Pole, 202. (1774) |
Web links |
|