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Taraxia ovata

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: TaraxiaView DescriptionDichotomous Key

Habit: Perennial herb, from thick taproot that may branch in age producing multiple rosettes, stem 0. Leaf: basal, simple, ovate or lanceolate to narrowly elliptic, nearly entire to deeply pinnately lobed. Inflorescence: flowers 1 in axils, erect in bud. Flower: radial, opening at dawn; sepals 4, reflexed separately; petals 4, yellow (or white), unspotted, strongly ultraviolet reflective (non-reflective at base), fading +- purple or +- red; stamens 8, longer ones opposite sepals, anthers attached at base, pollen grains 3-angled except in polyploid taxa (visible with hand lens); ovary chambers 4, stigma hemispheric, generally > anthers and cross-pollinated (or +- = anthers and self-pollinated), sterile projection of ovary persistent with fertile part in fruit, without abscission lines at juncture between hypanthium and fertile part of ovary. Fruit: cylindric-ovoid, +- angled to nearly cylindric, walls generally thin, distended by seeds, tip gradually attenuate into a slender sterile portion (0.4)1.5--18 cm, occasionally persistent for > 1 year, sessile. Seed: in 2 rows per chamber, elongate-ovoid, cylindric to oblong-ellipsoid, pitted or coarsely papillate, giving a shaggy appearance.
Species In Genus: 4 species: California to Washington & southwestern Canada, Nevada to Colorado (especially CA-FP). Etymology: (Leaves similar to Leontodon taraxacoides) Note: Incl in Camissonia in TJM (1993).

Taraxia ovata (Nutt. ex Torr. & A. Gray) Small
NATIVE
Habit: Plant +- fleshy. Leaf: blade 30--150 mm, narrowly elliptic to ovate, +- entire to wavy, veins and margin with short, erect hairs; petiole 8--150 mm. Flower: hypanthium 2--3 mm; sepals 11--19 mm; petals 8--23 mm; sterile tip of ovary 25--180 mm. Fruit: 11--30 mm, linear-oblanceolate, +- straight or slightly curved, swollen by seeds, papery, tardily dehiscent, +- sessile. Seed: 1.8--2.2 mm, papillate, brown. Chromosomes: 2n=14.
Ecology: Grassy fields, generally clay soil; Elevation: < 500 m. Bioregional Distribution: NW, CW; Distribution Outside California: southwestern Oregon. Flowering Time: Mar--Jun
Synonyms: Oenothera ovata Nutt. ex Torr. & A. Gray; Camissonia ovata (Nutt. ex Torr. & A. Gray) P.H. Raven
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. Taraxia ovata, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=89233, accessed on July 23, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on July 23, 2016.


Taraxia ovata
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© 2002 California Academy of Sciences
Taraxia ovata
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© 2012 Gary A. Monroe
Taraxia ovata
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© 2000 California Academy of Sciences
Taraxia ovata
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© 2014 California Academy of Sciences
Taraxia ovata
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© 2010 Neal Kramer
Taraxia ovata
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© 2012 Neal Kramer

More photos of Taraxia ovata in CalPhotos


Geographic subdivisions for Taraxia ovata:
NW, CW;
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.