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]



Frederick B. Essig

Generally woody vine, sometimes dioecious
Leaves generally 1–2-pinnate, cauline, generally opposite; petiole generally twining; leaflets ovate to lanceolate, often irregularly 2–3-lobed, coarsely toothed
Inflorescence: panicle to 1-flowered, axillary or terminal
Flower radial; sepals generally 4, free, petal-like, generally lanceolate, white to cream (or brightly colored elsewhere); petals 0; stamens many, free; pistils generally many, simple
Fruit: many achenes, each generally with an elongate, feathery style
Species in genus: 250 species: worldwide
Etymology: (Greek: twig)
Worldwide revision badly needed but CA species distinct.


C. ligusticifolia Nutt.


Leaf: leaflets 5–15, irregularly lobed or toothed, largest on plant 2–8 cm
Inflorescence several–many-flowered, axillary
Flower: sepals 6–10 mm, both surfaces hairy; stamens 25–40, 5–9 mm, ± = sepals; pistils 35–65
Fruit: body hairy
Ecology: Along streams, wet places
Elevation: < 2400 m.
Bioregional distribution: California
Distribution outside California: to British Columbia, South Dakota, New Mexico, nw Mexico
Flowering time: Jun–Sep
Horticultural information: IRR: 1, 2, 3, 4, 5, 6, 7, 14, 15, 16, 17, 22, 23, 24 &SHD: 8, 9, 18, 19, 20, 21.

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bioregional map for CLEMATIS%20ligusticifolia 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 Clematis ligusticifolia
Retrieve dichotomous key for Clematis
Overlay Consortium of California Herbaria specimen data by county on this map
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