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Camissonia contorta

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 Patterson, Bruce G. Baldwin.
Genus: CamissoniaView DescriptionDichotomous Key

Common Name: SUN CUP
Habit: Annual, from taproot; rosette generally +- 0. Leaf: cauline, alternate, simple, generally linear to narrowly elliptic. Inflorescence: bracted; spike or raceme, nodding in bud, erect in fruit, flowers only at distal nodes. Flower: radial, generally opening at dawn; sepals 4, reflexed singly or in pairs; petals 4, yellow, generally fading red, often with red basal spots; stamens 8, longer ones opposite sepals, anthers attached at middle, pollen grains 3-angled except in polyploid taxa, at 20×; ovary chambers 4, stigma hemispheric, generally > anthers and cross-pollinated, or +- = anthers and self-pollinated. Fruit: +- cylindric, straight to wavy, distorted by seeds at maturity, dehiscent throughout most of its length; pedicel +- 0 or <= 2(15) mm, 0 or shorter in flower. Seed: in 1 row per chamber, narrowly obovoid, smooth (minutely pitted), glossy.
Species In Genus: 12 species: western North America (especially CA-FP), 1 South America. Etymology: (L.A. von Chamisso, French-born German botanist, 1781--1838) Note: Polyploidy and self-pollination have predominated in evolution of genus. Not monophyletic as treated in TJM (1993); segregates moved to Camissoniopsis, Chylismia, Chylismiella, Eremothera, Eulobus, Neoholmgrenia, Taraxia, Tetrapteron (Wagner et al. 2007).

Camissonia contorta (Douglas) Kearney
NATIVE
Habit: Slender; hairs spreading, generally of 1 type (rod-shaped, transparent) only at plant base or throughout, in inflorescence also sparsely glandular. Stem: decumbent or erect, generally 3--30 cm, wiry, peeling. Leaf: generally 10--35 mm, linear to narrowly elliptic, minutely serrate, generally blue-green. Flower: hypanthium 1.2--2.3 mm; sepals 2.5--4 mm, remaining adherent in pairs; petals 3--5 mm, yellow fading +- red, basal spots 0 or 2; generally > 30% of pollen grains 4-angled. Fruit: generally 25--35 mm, 0.7--1.2 mm wide, +- swollen by seeds, straight or wavy, +- sessile. Seed: 0.7--0.9 mm. Chromosomes: 2n=42.
Ecology: Sandy soil, slopes, flats, often disturbed, grassland, chaparral, pinyon/juniper woodland; Elevation: < 2300 m. Bioregional Distribution: NW, CaR, SNF, GV, CW, MP; Distribution Outside California: to Washington, Idaho, western Nevada. Flowering Time: May--Jun Note: Self-pollinated. Probably derived from Camissonia strigulosa × Camissonia campestris subsp. campestris; sterile hybrids formed where both occur.
eFlora Treatment Author: Warren L. Wagner & Peter C. Hoch, family description, key to genera; treatment of genera by Warren L. Wagner
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Citation for this treatment: Warren L. Wagner & Peter C. Hoch, family description, key to genera; treatment of genera by Warren L. Wagner 2016. Camissonia contorta, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=16910, accessed on May 26, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 26, 2016.


Camissonia contorta
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© 2009 Keir Morse
Camissonia contorta
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© 2008 Gary A. Monroe
Camissonia contorta
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© 2009 Barry Breckling
Camissonia contorta
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© 2009 Keir Morse
Camissonia contorta
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© 2009 Keir Morse
Camissonia contorta
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© 2013 Gary A. Monroe

More photos of Camissonia contorta in CalPhotos


Geographic subdivisions for Camissonia contorta:
NW, CaR, SNF, GV, CW, MP;
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.
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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).

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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.
Blue line denotes eFlora flowering time.