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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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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. andersonii A. Gray

Perennial 8–18 cm, scapose, glabrous
Leaves basal; petioles 3–6 cm, blades 2–3 cm, cordate to reniform, 1-ternate, leaflets generally 2-dissected, segments lanceolate to oblong
Flower: receptacle puberulent; sepals 6.5–8 mm, persistent, white, red-tinged or not; petals 10–21 mm, 8–15 mm wide, white, red-tinged or not
Fruits 14–many; cluster spheric; body 8–15 mm, very compressed, sides 6–10 mm wide, smooth, margin wing-like; beak ± 0.5 mm, ± straight
Ecology: Rocky slopes, gravelly soils, scrub, pinyon/juniper woodland
Elevation: 900–2300 m.
Bioregional distribution: High Sierra Nevada (e slope), Modoc Plateau, White and Inyo Mountains, n Desert Mountains (Grapevine, Panamint mtns)
Distribution outside California: to Oregon, Idaho, Nevada
Flowering time: Jun
Horticultural information: TRY; DFCLT.

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bioregional map for RANUNCULUS%20andersonii being generated
 
N.B. The distribution depicted here differs from that given in The Jepson Manual (1993)
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Ranunculus andersonii
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