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Jepson Interchange (more information)
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RANUNCULACEAE

BUTTERCUP FAMILY

Dieter H. Wilken, except as specified

Annual, perennial herb, sometimes aquatic
Leaves generally basal and cauline, generally alternate, simple or compound; petioles at base generally flat, sometimes sheathing or stipule-like
Inflorescence: cyme, raceme, panicle, or flowers solitary
Flower generally bisexual, radial; sepals generally 5, free, early deciduous or withering in fruit, generally green; petals 0–many, free; stamens generally 10–many; pistils 1–many, ovary superior, chamber 1, style 1, generally ± persistent in fruit as beak, ovules 1–many
Fruit: achene, follicle, berry, or utricle-like, 1–many-seeded
Genera in family: ± 60 genera, 1700 species: worldwide, especially n temp, tropical mtns; many ornamental (Adonis, Aquilegia, Clematis, Consolida, Delphinium, Erianthis, Helleborus ), some highly TOXIC (Aconitum, Actaea, Delphinium, Ranunculus )
Reference: [Duncan & Keener 1991 Phytologia 70:24–27]

RANUNCULUS

BUTTERCUP

Annual, perennial herb, sometimes from stolons or caudices, terrestrial or aquatic; roots generally fibrous
Stem prostrate to erect
Leaves basal and generally cauline, generally reduced upwards, generally glabrous; petiole base flat, stipule-like or not; basal and lower cauline petioles generally long; blades simple to dissected or compound, entire to toothed
Inflorescence: cyme, axillary or terminal, 1–few-flowered
Flower radial; sepals generally 5, generally early deciduous, generally glabrous, generally green to yellowish; petals generally 5, generally > sepals, generally white to yellow, shiny; nectar gland near petal base, pocket-like or with flap-like scale; anthers yellow; pistils generally many
Fruit: achene, generally compressed, beaked, generally glabrous; walls thick
Species in genus: ± 250 species: temp worldwide, tropical mtns; some ornamental
Etymology: (Latin: (Pliny) little frog, from generally wet habitats)

Native

R. hebecarpus Hook. & Arn.

Annual (2)8–30 cm
Stem erect, slender, soft-hairy; branches 0–few
Leaves soft-hairy; basal and lower cauline petioles 1.5–8 cm, blades 0.5–2 cm, generally cordate, deeply 3–5-lobed to 1-ternate, lobes or leaflets oblanceolate to wedge-shaped, toothed to lobed; upper cauline leaves 3-lobed to 1-ternate, lobes or leaflets entire to toothed
Flower: receptacle glabrous; sepals 1–2 mm, hairs short, soft; petals 0–3(5), 1–2 mm, < 1 mm wide
Fruits 3–11; cluster spheric; body ± 2 mm, sides ± 2 mm wide, papillate, puberulent, hairs curved or hooked at tip, back keeled; beak ± 0.5 mm, ± straight to curved
Ecology: Shaded areas, chaparral, oak, pine, or juniper woodland
Elevation: < 1300 m.
Bioregional distribution: Inner North Coast Ranges, Cascade Range, Sierra Nevada, Sacramento Valley (Sutter Buttes), Central Western California, Southwestern California (except n Channel Islands), Modoc Plateau
Distribution outside California: to Washington, Idaho, Baja California
Horticultural information: TRY.

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bioregional map for RANUNCULUS%20hebecarpus being generated
 
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Retrieve Jepson Interchange Index to Plant Names entry for Ranunculus hebecarpus
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