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Streptanthus cordatus var. cordatus

Higher Taxonomy
Family: Brassicaceae (Cruciferae)View DescriptionDichotomous Key

Habit: Annual to shrub; sap pungent, watery. Leaf: generally simple, alternate; generally both basal, cauline; stipules 0. Inflorescence: generally raceme, generally not bracted. Flower: bisexual, generally radial; sepals 4, generally free; petals (0)4, forming a cross, generally white or yellow to purple; stamens generally 6 (2 or 4), 4 long, 2 short (3 pairs of unequal length); ovary 1, superior, generally 2-chambered with septum connecting 2 parietal placentas; style 1, stigma entire or 2-lobed. Fruit: capsule, generally 2-valved, "silique" (length >= 3 × width) or "silicle" (length < 3 × width), dehiscent by 2 valves or indehiscent, cylindric or flat parallel or perpendicular to septum, segmented or not. Seed: 1--many, in 1 or 2 rows per chamber, winged or wingless; embryo strongly curved.
Genera In Family: +- 330 genera, 3780 species: worldwide, especially temperate. Note: Highest diversity in Mediterranean area, mountains of southwestern Asia, adjacent central Asia, western North America; some Brassica species are oil or vegetable crops; Arabidopsis thaliana used in experimental molecular biology; many species are ornamentals, weeds. Aurinia saxatilis (L.) Desvaux in cultivation only. Aubrieta occasional waif in central NCoR, Carrichtera annua (L.) DC. in SCo, Iberis sempervirens L., Iberis umbellata L. in PR, Teesdalia coronopifolia (Bergeret) Thell., Teesdalia nudicaulis (L.) W.T. Aiton in southern NCoRO, CCo. Cardaria, Coronopus moved to Lepidium; Caulostramina to Hesperidanthus; Guillenia to Caulanthus; Heterodraba to Athysanus; California taxa of Lesquerella to Physaria; Malcolmia africana to Strigosella.
eFlora Treatment Author: Ihsan A. Al-Shehbaz, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: StreptanthusView DescriptionDichotomous Key

Habit: Annual to perennial herb, generally +- glaucous; hairs simple or 0. Leaf: basal rosetted or not, petioled, entire or dentate to pinnately lobed or divided; cauline sessile, occasionally petioled, base generally lobed or clasping. Inflorescence: elongated. Flower: radial or bilateral; calyx urn- or occasionally bell-shaped, sepals erect, base +- sac-like, keeled or not; petal blade narrower to wider than proximal 1/2, generally channeled, margins +- crinkled or not; stamens in 3 pairs of unequal length, or 4 long and 2 short, longest filaments fused or free. Fruit: silique, dehiscent, linear, flat parallel to septum, unsegmented; stigma entire or 2-lobed. Seed: 10--120, in 1 row, generally winged.
Species In Genus: 35 species: southwestern United States, northern Mexico. Etymology: (Greek: twisted flower, from wavy-margined petals)
Species: Streptanthus cordatusView Description 

Habit: Perennial herb, caudex simple or branched, glaucous, generally glabrous. Stem: (1)3--9(11) dm, simple or few-branched. Leaf: basal rosetted, spoon-shaped to narrowly oblanceolate; petiole ciliate, broadly winged; mid-cauline sessile, 2--9 cm, 0.7--4.5(6) cm wide, broadly oblong to ovate or +- round to lanceolate, entire or few-toothed, base lobed to clasping; distal reduced. Inflorescence: open; terminal sterile flower cluster 0. Flower: calyx bell-shaped, sepals 5--12 mm, broadly oblong, not keeled, +- green-brown to purple, tips hairy or not; petals 9--15 mm, 0.7--1 mm wide, not crinkled, purple to +- brown; filaments free, in 3 pairs of unequal length, longest pair 7.5--10 mm; anthers all fertile, 2.5--5 mm. Fruit: ascending to +- spreading, 5--10.5(14.5) cm, (2.5)3--6(7) mm wide, straight, not constricted between seeds; valves glabrous, midvein distinct; stigma +- unlobed to 2-lobed; pedicels spreading-ascending, 3--11(14) mm. Seed: 20--38(46), 2.5--5 mm, broadly oblong to +- round; wing 0.1--0.9 mm wide, continuous.

Streptanthus cordatus Nutt. var. cordatus
Leaf: basal obovate to spoon-shaped, tip obtuse to rounded; mid-cauline broadly oblong to ovate or +- round, +- round to obtuse at tip. Fruit: 2.5--6(7) mm wide; stigma +- entire to prominently 2-lobed. Chromosomes: 2n=28,56.
Ecology: Common. Rocky, sandy sagebrush scrub, pinyon/juniper woodland, talus, calcareous outcrops; Elevation: 1200--3100 m. Bioregional Distribution: e CaRH, GB, e DMtns; Distribution Outside California: to southeastern Oregon, Wyoming, northern New Mexico. Flowering Time: Apr--Jul
Synonyms: Streptanthus cordatus var. duranii Jeps.
Unabridged Note: Streptanthus cordatus var. duranii was based on narrower fruit, a feature sporadic throughout the range of Streptanthus cordatus var. cordatus.
eFlora Treatment Author: Ihsan A. Al-Shehbaz
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botanical illustration including Streptanthus cordatus var. cordatus


Citation for this treatment: Ihsan A. Al-Shehbaz 2017. Streptanthus cordatus var. cordatus, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on February 24, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on February 24, 2017.

Streptanthus cordatus var. cordatus
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© 2010 Steve Matson
Streptanthus cordatus var. cordatus
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© 2009 Gary A. Monroe
Streptanthus cordatus var. cordatus
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© 2005 James M. Andre
Streptanthus cordatus var. cordatus
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© 2005 James M. Andre
Streptanthus cordatus var. cordatus
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© 2016 Keir Morse
Streptanthus cordatus var. cordatus
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© 2016 Keir Morse

More photos of Streptanthus cordatus var. cordatus in CalPhotos

Geographic subdivisions for Streptanthus cordatus var. cordatus:
e CaRH, GB, e DMtns;
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.
Blue line denotes eFlora flowering time.