Jepson eFlora: Taxon page
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Epilobium glaberrimum subsp. glaberrimum

Higher Taxonomy
Family: OnagraceaeView DescriptionDichotomous Key

Habit: Annual to perennial herb (to tree). Leaf: cauline or basal, alternate, opposite, or whorled, generally simple and toothed (to pinnately compound); stipules 0 or generally deciduous. Inflorescence: spike, raceme, panicle, or flowers 1 in axils; bracted. Flower: generally bisexual, generally radial, often opening at either dawn or dusk; hypanthium generally prolonged beyond ovary (measured from ovary tip to sepal base); sepals 4(2--7); petals 4(2--7, rarely 0), often fading darker; stamens 2 × or = sepals in number, anthers 2-chambered, opening lengthwise, pollen interconnected by threads; ovary inferior, chambers generally as many as sepals (sometimes becoming 1), placentas axile or parietal, ovules 1--many per chamber, style 1, stigma 4-lobed (or lobes as many as sepals), club-shaped, spheric, or hemispheric. Fruit: capsule, loculicidal (sometimes berry or indehiscent and nut-like). Seed: sometimes winged or hair-tufted.
Genera In Family: 22 genera, +- 657 species: worldwide, especially western North America; many cultivated (Clarkia, Epilobium, Fuchsia, Oenothera). Note: Gaura moved to Oenothera. Fuchsia magellanica Lam. naturalized in northern California.
eFlora Treatment Author: Warren L. Wagner & Peter C. Hoch, family description, key to genera, treatment of genera by Warren L. Wagner, except as noted
Scientific Editor: Robert Patterson, Bruce G. Baldwin.
Genus: EpilobiumView DescriptionDichotomous Key

Habit: Annual to subshrub. Leaf: generally opposite proximally (or clustered in axils), generally +- fine-toothed; veins generally obscure. Inflorescence: generally raceme, bracted. Flower: radial or rarely +- bilateral; sepals 4, erect; petals 4, notched; stamens 8, anthers attached at middle, pollen grains generally shed in 4s, cream-yellow; ovary chambers 4, stigma generally club-like, occasionally 4-lobed. Fruit: straight, cylindric to club-like. Seed: generally in 1 row per chamber, generally with white, deciduous hair-tuft.
Species In Genus: 165 species: worldwide except tropics. Etymology: (Greek: upon pod, from inferior ovary) Note: Incl Boisduvalia, Zauschneria. Most taxa polyploid; many with anthers +- = stigma self-pollinated; many hybrids. Taxa with alternate leaves moved to Chamerion.
eFlora Treatment Author: Peter C. Hoch
Species: Epilobium glaberrimumView Description 

Habit: Perennial herb, clumped, generally ascending, +- glabrous, glaucous; stolons short, scaly. Leaf: +- sessile, narrowly lanceolate to narrowly ovate, clasping. Flower: hypanthium 0.7--2.3 mm; petals generally pink to rose-purple (white); stigma broadly club-like. Fruit: occasionally sparsely hairy. Seed: papillate. Chromosomes: 2n=36.

Epilobium glaberrimum Barbey subsp. glaberrimum
Stem: 2--8.5 dm, generally branched distally. Leaf: 20--70 mm, +- narrowly lanceolate. Flower: sepals 3--7.5 mm; petals 5--10(12) mm, rose-purple to pink or white. Fruit: 45--75 mm; pedicel 5--25 mm. Seed: 0.7--1 mm.
Ecology: Well-drained, gravelly soils, streambanks, roadsides; Elevation: 150--3000 m. Bioregional Distribution: KR, NCoRH, CaRH, SNH, TR, PR, Wrn, n W&I; Distribution Outside California: to Washington, Idaho, Utah, northern Mexico. Flowering Time: Jun--Sep
eFlora Treatment Author: Peter C. Hoch
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botanical illustration including Epilobium glaberrimum subsp. glaberrimum


Citation for this treatment: Peter C. Hoch 2017. Epilobium glaberrimum subsp. glaberrimum, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 23, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on October 23, 2017.

Epilobium glaberrimum subsp. glaberrimum
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© 2009 Barry Breckling
Epilobium glaberrimum subsp. glaberrimum
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© 2003 Steve Matson
Epilobium glaberrimum subsp. glaberrimum
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© 2003 Steve Matson
Epilobium glaberrimum subsp. glaberrimum
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© 2015 Keir Morse
Epilobium glaberrimum subsp. glaberrimum
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© 2015 Keir Morse
Epilobium glaberrimum subsp. glaberrimum
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© 2006 George W. Hartwell

More photos of Epilobium glaberrimum subsp. glaberrimum in CalPhotos

Geographic subdivisions for Epilobium glaberrimum subsp. glaberrimum:
KR, NCoRH, CaRH, SNH, TR, PR, Wrn, n W&I;
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.