Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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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]



Perennial from short caudex, generally fleshy, glabrous
Stems 1–few
Leaves simple, mostly basal, generally cordate to reniform, entire to sharp-toothed; basal petioles > blades
Inflorescence: cyme or flower solitary, terminal or axillary; bracts leaf-like
Flower radial; sepals 5–12, petal-like, white to yellow; petals 0; pistils 5–many
Fruit: follicles, sessile to short-stalked, generally beaked
Seed generally smooth, brown to black
Species in genus: ± 10 species: temp North America, Eurasia
Etymology: (Greek: ancient name, from bowl-shaped flower)


C. leptosepala DC. var. biflora (DC.) G. Lawson

Plant 8–36 cm
Stem generally < 5 cm, simple
Leaves: petioles 3–25 cm, blades 2–9 cm wide, subentire to crenate
Inflorescence: peduncle 4–32 cm, generally > leaves, 1(2)-flowered
Flower: sepals 5–11, 8–20 mm, oblong to elliptic
Fruit: follicles 3–8, 7–18 mm; beak generally straight, erect
Ecology: Marshes, pond margins, streambanks, coniferous forest
Elevation: 900–3300 m.
Bioregional distribution: Klamath Ranges, Cascade Range, High Sierra Nevada, Modoc Plateau
Distribution outside California: to Alaska
Synonyms: C. howellii (Huth) Greene
Horticultural information: WET: 4, 5, 17 &SHD: 1, 2, 3, 6, 7, 15, 16.

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bioregional map for CALTHA%20leptosepala%20var.%20biflora being generated
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 Caltha leptosepala var. biflora
Retrieve dichotomous key for Caltha
Overlay Consortium of California Herbaria specimen data by county on this map
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