Jepson Herbarium
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Indexes to all accepted names and synonyms: | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |

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.
22 genera, ± 657 species: worldwide, especially w North America; many cultivated (Clarkia, Epilobium, Fuchsia, Oenothera). [Wagner et al. 2007 Syst Bot Monogr 83:1–240] Gaura moved to Oenothera. Fuchsia magellanica Lam. naturalized in n CA. —Scientific Editors: Robert Patterson, Bruce G. Baldwin.
Unabridged references: [Munz 1965 North America Fl II 5:1–278]

Key to Onagraceae

Annual to subshrub, from taproot.
Leaf: basal and cauline, alternate, simple, generally narrowly lanceolate or narrowly elliptic to ovate.
Inflorescence: spike, nodding in bud, generally flower from basal-most to distal nodes.
Flower: opening at dawn; sepals 4, reflexed singly or in fused pairs; petals 4, yellow, fading red, generally with 1+ red basal spots, with no ultraviolet pattern; stamens 8, longer opposite sepals, anthers attached at middle, pollen grains 3-angled except in polyploid taxa at 20×; ovary chambers 4, stigma ± spheric or hemispheric, exceeding anthers and cross-pollinated or ± = anthers and self-pollinated.
Fruit: 4-angled at least when dry, generally proximally thick, contorted or curled 1–5 times, or straight, not swollen by seeds, sessile.
Seed: in 1 row per chamber, narrowly obovoid, flattened, dull brown-black.
14 species: CA, AZ, OR, Baja CA. (Greek: like Camissonia) [Wagner et al. 2007 Syst Bot Monogr 83:1–240] Polyploidy and self-pollination have predominated in evolution of genus. Incl in Camissonia in TJM (1993).
Unabridged references: [Raven 1969 Contr US Natl Herb 37:161–396]

Perennial or subshrub, short-lived, rosetted, densely strigose ( glabrous); hairs of inflorescence generally erect, short.
Stem: prostrate to ± ascending, < 60(130) cm, peeling.
Leaf: 5–50 mm, narrowly ovate to obovate, minutely serrate; cauline petioles 0–10 mm.
Flower: hypanthium 2.1–8.5 mm; sepals 4–11.5 mm; petals 6–20 mm, basal spots 0–2.
Fruit: 10–25 mm, 2–2.5 mm wide, 4-angled, generally 1–2-coiled.
Seed: 1.2–1.3 mm.
2n=14. [Camissonia cheiranthifolia (Spreng.) Raim.] Subspp. intergrade on ChI. [Online Interchange]
Unabridged synonyms: [Oenothera cheiranthifolia Hornem. ex Spreng.; Oenothera cheiranthifolia var. nitida (Greene) Munz; Camissonia cheiranthifolia (Hornem. ex Spreng.) Raim.]
Unabridged note: Expanded author citation: Camissoniopsis cheiranthifolia (Hornem. ex Spreng.) W.L. Wagner & Hoch

Perennial; hairs rarely dense and silvery.
Flower: hypanthium 2.1–4.2(4.8) mm; petals 6–11 mm, basal spots 0(2); anthers 1–1.5 mm; style 6–9 mm.
Sandy slopes, flats, coastal dunes; < 100 m. North Coast, Central Coast, Channel Islands;

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].

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Bioregions in which taxon occurs	Red area (if present) is the part of the bioregion lying between the upper and lower elevation limits of the taxon; 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.
Chart based on elevation range in Manual and elevations and coordinates of CCH records. Data provided by the participants of the Consortium of California Herbaria. Note: About half of the CCH records include both elevation and coordinates.	Map made in collaboration with Scott Loarie. Data provided by the participants of the Consortium of California Herbaria. View all CCH records   CCH collections by month Duplicates counted once; synonyms included. Species do not include records of infraspecific taxa. Blue line denotes Manual flowering time.