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Anemone occidentalis

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: AnemoneView DescriptionDichotomous Key

Common Name: ANEMONE
Habit: Perennial herb from caudex, rhizome, or tuber. Leaf: basal, generally many, simple to compound, generally petioled; blade or leaflets lobed to dissected or not, margins entire or toothed; in flower or fruit withered or not. Inflorescence: terminal, flowers 1 or 2--7[9] in cymes; peduncle erect; pedicel elongated in fruit; involucre bracts sessile or stalked, generally in 1--2 whorls of 2--5[9], simple to compound, +- like leaves or leaflets in size, shape. Flower: receptacle elongated in fruit; sepals 5--10[27], petal-like; petals generally 0; stamens 10--200; pistils many, styles persistent as beaks. Fruit: achene.
Species In Genus: +- 150 species: arctic, temperate worldwide; some cultivated for ornamental. Etymology: (Greek: flower shaken by wind) Note: Species with long, plumose styles sometimes placed in Pulsatilla.
eFlora Treatment Author: Scott Simono

Anemone occidentalis S. Watson
Habit: Plant 10--60(75) cm; caudex branches 0--few. Leaf: (2)3--6(8); petiole 6--8(12) cm; blade generally 1-ternate, 1--2-pinnately lobed to dissected, soft-shaggy-hairy; terminal leaflet (2.5)3--6(8) cm, ovate; ultimate segments 2--3 mm wide, linear. Inflorescence: flowers generally 1; peduncle woolly to shaggy-hairy or +- glabrous; involucre bracts in 1 whorl of generally 3. Flower: sepals 5--7, 15--30 mm, 10--17(19) mm wide, ovate to obovate (elliptic), white to +- purple, abaxially soft-hairy; stamens 150--200. Fruit: body 3--4 mm, ellipsoid, densely woolly to soft-hairy; pedicel 15--20(22) cm; beak (18)20--40(50) mm, curved to reflexed, long-shaggy-hairy, plumose; aggregate spheric (cylindric). Chromosomes: 2n=16.
Ecology: Open, rocky slopes, alpine; Elevation: 1200--3200 m. Bioregional Distribution: KR, CaR, SN; Distribution Outside California: to British Columbia, Montana. Flowering Time: May--Sep
eFlora Treatment Author: Scott Simono
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botanical illustration including Anemone occidentalis


Citation for this treatment: Scott Simono 2016. Anemone occidentalis, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on February 13, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on February 13, 2016.

Anemone occidentalis
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© 2010 Keir Morse
Anemone occidentalis
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© 2010 Keir Morse
Anemone occidentalis
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© 1999 John Game
Anemone occidentalis
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© 2008 George W. Hartwell
Anemone occidentalis
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© 2009 George W. Hartwell
Anemone occidentalis
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© 2009 Barry Breckling

More photos of Anemone occidentalis in CalPhotos

Geographic subdivisions for Anemone occidentalis:
KR, CaR, SN;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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.