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    Vascular Plants of California
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Epilobium canum subsp. canum

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
Reference: Raven 1976 Ann Missouri Bot Gard 63:326--340; Wagner et al. 2007 Syst Bot Monogr 83:81--95
Species: Epilobium canumView Description 

Habit: Perennial herb (clumped with basal scaly shoots) to subshrub, strigose to +- densely spreading-hairy and generally glandular. Leaf: +- sessile, 8--70 mm, linear to widely ovate, green to +- gray, +- entire to strongly toothed. Flower: red-orange; hypanthium 17--34 mm; sepals 4--10 mm; petals 7--15 mm; stamens << pistil; stigma 4-lobed. Fruit: 15--30 mm, +- beaked, hairy; pedicel 0--3 mm. Seed: 1.2--2.3 mm, low-papillate.
Note: Hummingbird-pollinated. Subspecies intergrade, especially in southern California.

Epilobium canum (Greene) P.H. Raven subsp. canum
Habit: Perennial herb or subshrub, 2--12 dm, strigose to spreading hairy, occasionally glandular. Leaf: often clustered, linear to (narrowly) lanceolate, +- entire to barely toothed, generally +- gray. Chromosomes: 2n=30,60.
Ecology: Dry slopes, ridges; Elevation: < 2100 m. Bioregional Distribution: CA-FP (exc n SNH); Distribution Outside California: to northwestern Mexico. Flowering Time: Jun--Dec
Unabridged Synonyms: Zauschneria cana Greene; Zauschneria californica C. Presl subsp. californica
eFlora Treatment Author: Peter C. Hoch
Reference: Raven 1976 Ann Missouri Bot Gard 63:326--340; Wagner et al. 2007 Syst Bot Monogr 83:81--95
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botanical illustration including Epilobium canum subsp. canum


Citation for this treatment: Peter C. Hoch 2012, Epilobium canum subsp. canum, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on September 22, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on September 22, 2018.

Epilobium canum subsp. canum
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© 2007 Neal Kramer
Epilobium canum subsp. canum
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© 2007 George W. Hartwell
Epilobium canum subsp. canum
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© 2015 Keir Morse
Epilobium canum subsp. canum
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© 2007 Thomas Stoughton
Epilobium canum subsp. canum
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© 2007 George W. Hartwell
Epilobium canum subsp. canum
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© 1993 Gary A. Monroe

More photos of Epilobium canum subsp. canum in CalPhotos

Geographic subdivisions for Epilobium canum subsp. canum:
CA-FP (exc n SNH);
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).

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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, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.