Jepson eFlora: Taxon page
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Clematis lasiantha

Higher Taxonomy
Family: RanunculaceaeView DescriptionDichotomous Key

Habit: Annual, perennial herb, woody vine [shrub], occasionally aquatic. Leaf: generally basal and cauline, alternate or opposite, simple or compound; petioles at base generally flat, occasionally sheathing or stipule-like. Inflorescence: cyme, raceme, panicle, or flowers 1. Flower: generally bisexual, generally radial; sepals 3--6(20), free, early-deciduous or withering in fruit, generally green; petals 0--many, generally free; stamens generally 5--many, staminodes generally 0; pistils 1--many, ovary superior, chamber 1, style 0--1, generally +- persistent as beak, ovules 1--many. Fruit: achene, follicle, berry, +- utricle in Trautvetteria, in aggregate or not, 1--many-seeded.
Genera In Family: +- 60 genera, 1700 species: worldwide, especially northern temperate, tropical mountains; many ornamental (Adonis, Aquilegia, Clematis, Consolida, Delphinium, Helleborus, Nigella). Toxicity: some highly TOXIC (Aconitum, Actaea, Delphinium, Ranunculus). Note: Taxa of Isopyrum in TJM (1993) moved to Enemion; Kumlienia moved to Ranunculus.
eFlora Treatment Author: Margriet Wetherwax & Dieter H. Wilken, family description, key to genera
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: ClematisView DescriptionDichotomous Key

Habit: Plant +- woody vine; occasionally dioecious. Leaf: generally 1--2-pinnate, cauline, opposite; petiole generally tendril-like; leaflets ovate to lanceolate, generally irregularly 2--3-lobed or coarsely toothed, occasionally entire. Inflorescence: 1-flowered to panicle, axillary [terminal]. Flower: unisexual; sepals generally 4, free, petal-like, white to cream [brightly colored]; petals 0; stamens many, free; pistils 5--many. Fruit: achene, each generally with elongate, feathery style.
Species In Genus: 300 species: worldwide; Clematis terniflora DC., cultivated. Etymology: (Greek: twig) Note: Clematis drummondii Torr. & A. Gray undocumented for California.
eFlora Treatment Author: James S. Pringle & Frederick B. Essig

Clematis lasiantha Nutt.
Leaf: leaflets 3--5, +- 3-lobed, toothed, largest generally 1.5--6 cm. Inflorescence: generally 1-flowered. Flower: sepals 10--21 mm, hairy abaxially, adaxially; stamens 50--100, 7--13 mm, << sepals; pistils 75--100. Fruit: body hairy.
Ecology: Hillsides, chaparral, open woodland; Elevation: < 2000 m. Bioregional Distribution: KR, NCoRI, CaRF, SNF, ScV (Sutter Buttes), CW, SW; Distribution Outside California: Baja California. Flowering Time: Jan--Jun
eFlora Treatment Author: James S. Pringle & Frederick B. Essig
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botanical illustration including Clematis lasiantha


Citation for this treatment: James S. Pringle & Frederick B. Essig 2016. Clematis lasiantha, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 28, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 28, 2016.

Clematis lasiantha
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© 2009 Keir Morse
Clematis lasiantha
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© 2007 Neal Kramer
Clematis lasiantha
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© 2011 Neal Kramer
Clematis lasiantha
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© 2014 Julie Kierstead Nelson
Clematis lasiantha
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© 2015 Barry Breckling
Clematis lasiantha
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© 2009 California Academy of Sciences

More photos of Clematis lasiantha in CalPhotos

Geographic subdivisions for Clematis lasiantha:
KR, NCoRI, CaRF, SNF, ScV (Sutter Buttes), CW, SW;
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.