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Vascular Plants of California
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Epilobium brachycarpum

Higher Taxonomy
Family: OnagraceaeView DescriptionDichotomous Key

Common Name: EVENING-PRIMROSE FAMILY
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 W. Patterson, Bruce G. Baldwin.
Epilobium brachycarpum C. Presl
NATIVE
Habit: Annual 2--20 dm, glabrous and peeling proximally, strigose and generally glandular-hairy distally. Leaf: generally early-deciduous, 10--55 mm, linear to narrowly elliptic, acuminate, generally folded along midrib, +- glabrous; petiole 0--4 mm. Inflorescence: panicle or raceme. Flower: hypanthium 1.5--8(16) mm; sepals 1.2--8 mm; petals 2--15(20) mm, white to rose-purple; stamens <= pistil; stigma sometimes 4-lobed. Fruit: 15--32 mm, glabrous or glandular; pedicel 1--17 mm. Seed: 1.5--2.7 mm, papillate, hair-tuft readily deciduous. Chromosomes: 2n=24.
Ecology: Common. Dry or seasonally moist, often disturbed ground in open woods, meadows, prairies, esp on roadsides, streambanks; Elevation: < 3300 m. Bioregional Distribution: CA-FP (exc ChI), MP, W&I; Distribution Outside California: to British Columbia, Minnesota, New Mexico, also eastern Canada; introduced in southern South America, Europe. Flowering Time: Jun--Sep Note: Highly variable, especially flower size.
Unabridged Synonyms: Epilobium paniculatum Nutt. ex Torr. & A. Gray; Epilobium paniculatum Nutt. ex Torr. & A. Gray var. jucundum (A. Gray) Trel.; Epilobium paniculatum Nutt. ex Torr. & A. Gray var. laevicaule (Rydb.) Munz; Epilobium paniculatum Nutt. ex Torr. & A. Gray var. tracyi (Rydb.) Munz
Jepson eFlora Author: Peter C. Hoch
Reference: Raven 1976 Ann Missouri Bot Gard 63:326--340; Wagner et al. 2007 Syst Bot Monogr 83:81--95
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
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