Ranunculus sardous |
Ranunculus micranthus |
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hairy buttercup, hairy crowfoot |
rock buttercup, small-flower crowfoot |
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Roots | dimorphic, some filiform, 0.2-0.6 mm thick and some with tuberous bases 1-2 mm thick. |
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Stems | nearly erect, hispid, base not bulbous. |
erect, 11-40 cm, villous, each with 8-35 flowers. |
Basal leaves | persistent, blades ovate, orbiculate, or transversely elliptic, outer blades undivided, inner 3-parted or 3-foliolate, 1-3.3 × 1-3 cm, base truncate to broadly obtuse or sometimes weakly cordate, margins crenate, apex rounded-obtuse. |
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Flowers | pedicellate; receptacle pilose; sepals 5, reflexed, 3-8 × 1.5-3 mm, pilose; petals 5, 7-10 × 4-8 mm. |
pedicels glabrous or villous; receptacle glabrous; sepals 2-4 × 1-1.5 mm, abaxially glabrous or pubescent, hairs colorless; petals 5, 1.5-3.5 × 0.5-1.5 mm; nectary scale glabrous. |
Heads of achenes | globose or ovoid, 5-8 × 6-7 mm; achenes 15-35 per head, 2-3 × 2-3 mm, faces sparsely papillate or sometimes smooth, glabrous, margin smooth; beak oblong to deltate, curved, 0.4-0.7 mm. |
globose to cylindric, 3-7 × 2-4 mm; achenes 1.1-1.5 × 1-1.3 mm, glabrous; beak subulate, straight or curved, 0.2-0.3 mm. |
Basal | and lower cauline leaf blades ovate to cordate, 3-foliolate, 2-6 × 2-6 cm, leaflets again parted, leaflet base truncate to acute, margins crenate-dentate to crenate-lobulate, apex rounded to obtuse. |
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2n | = 16. |
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Ranunculus sardous |
Ranunculus micranthus |
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Phenology | Flowering late winter–summer (Mar–Aug). | Flowering spring (Mar–May). |
Habitat | Roadsides, fields, open woods | Woods, meadows, and clearings |
Elevation | 0-200 m (0-700 ft) | 0-1000 m (0-3300 ft) |
Distribution |
AL; AR; CA; FL; GA; IL; KS; KY; LA; MD; MO; MS; NC; NJ; NY; OK; OR; PA; RI; SC; TN; TX; VA; BC; native to Europe; Pacific Islands; Australia [Introduced in North America]
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AL; AR; CT; DC; IL; IN; KS; KY; MA; MD; MO; MS; NC; NJ; NY; OH; OK; PA; SD; TN; VA; WV
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Discussion | Ranunculus sardous was collected in New Brunswick and Ontario in the 1800s, but it apparently has not persisted in those provinces. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Echinella | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Epirotes |
Sibling taxa | ||
Synonyms | R. parvulus | R. micranthus var. cymbalistes, R. micranthus var. delitescens |
Name authority | Crantz: Stirp. Austr. Fasc. 2: 84. (1763) | Nuttall: in J. Torrey and A. Gray, Fl. N. Amer. 1: 18. (1838) |
Web links |
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