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Vascular Plants of California
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Enemion occidentale
WESTERN RUE-ANEMONE


Higher Taxonomy
Family: RanunculaceaeView DescriptionDichotomous Key
Common Name: BUTTERCUP FAMILY
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: EnemionView DescriptionDichotomous Key


Common Name: FALSE RUE-ANEMONE
Habit: Perennial herb from clustered, slender to fusiform or +- spheric fleshy roots, glabrous. Stem: ascending to erect; branches 0(few). Leaf: 2-ternate; basal petioles generally > blades, cauline short to +- 0; leaflets wide-ovate to wedge-shaped-obovate, margins entire to deeply 2--3 lobed. Inflorescence: terminal or axillary, cymes or racemes, 2--10 flowered, or flowers 1. Flower: sepals generally 5, petal-like; petals 0; stamens 10--many; pistils [2]3--10, stalk-like base 0 or short. Fruit: follicle, glabrous, veins obvious, stalk-like base curved or not, occasionally 0, beak straight to recurved. Seed: +- red-brown, smooth, wrinkled or minutely pubescent.

eFlora Treatment Author: Bruce A. Ford
Unabridged Reference: Calder & Taylor 1963 Madroño 17:69--76
Enemion occidentale (Hook. & Arn.) J.R. Drumm. & Hutch.
NATIVE
Habit: Plant 8--34 cm. Stem: 1--3, erect, generally simple. Leaf: 3--12 cm; segment lobes 2--3, generally < 1/2 segment length. Flower: sepals 3--7 mm wide, oblong to ovate, white, occasionally tinged pink; stamens 3--6 mm; pistils 5--8. Fruit: 8--10.5 mm.
Ecology: Shaded slopes, chaparral, oak woodland, conifer forest; Elevation: 200--1500 m. Bioregional Distribution: NCoRI, SN, CW (exc CCo), n WTR. Flowering Time: Mar--May
Synonyms: Isopyrum occidentale Hook. & Arn.
Jepson eFlora Author: Bruce A. Ford
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Enemion
Next taxon: Enemion stipitatum

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Botanical illustration including Enemion occidentale

botanical illustration including Enemion occidentale

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Citation for this treatment: Bruce A. Ford 2012, Enemion occidentale, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=24250, accessed on April 18, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 18, 2024.

Enemion occidentale
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©2004 Steve Matson
Enemion occidentale
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©2011 Barry Breckling
Enemion occidentale
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©2009 Barry Breckling
Enemion occidentale
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©2004 Steve Matson
Enemion occidentale
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©2017 Neal Kramer

More photos of Enemion occidentale
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Geographic subdivisions for Enemion occidentale:
NCoRI, SN, CW (exc CCo), n WTR.
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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).





 

Data provided by the participants of the  Consortium of California Herbaria.
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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).