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Vascular Plants of California
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Streptanthella longirostris

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: StreptanthellaView Description 

Species In Genus: 1 sp. Etymology: (Latin: small Streptanthus)
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Streptanthella longirostris (S. Watson) Rydb.
Habit: Annual; generally glaucous, glabrous or hairy proximally. Stem: (1.2)2--6(7.5) dm. Leaf: proximal cauline 2--5.5(6.5) cm, lanceolate to oblanceolate; distal cauline linear, sessile, entire. Flower: sepals erect, 2--4(5) mm, lateral pair base +- sac-like; petals (3.5)4--6(7) mm, 0.7--1.1 mm wide, spoon-shaped, crinkled, clawed, white to +- yellow, purple-veined; stamens 4 long, 2 short. Fruit: silique, dehiscent except near tip, (2.5)3.5--6(7) cm, 1.5--2(2.2) mm wide, linear, flat parallel to septum, unsegmented, tip narrowed to beak (2)3.5--6(8) mm; stigma entire; pedicel recurved to reflexed, (1)2--5(7). Seed: (12)16--28(34), in 1 row, 2--3 mm, flat; wing 0.3--0.7 mm wide. Chromosomes: 2n=28.
Ecology: Common in sandy soils, desert scrub, woodland, slopes, chaparral; Elevation: 50--2200 m. Bioregional Distribution: s SnJV, SCoRI, GB, D; Distribution Outside California: to Washington, Colorado, New Mexico, Baja California. Flowering Time: Mar--Jun
Unabridged Synonyms: Streptanthella longirostris var. derelicta J.T. Howell
Jepson eFlora Author: Ihsan A. Al-Shehbaz
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Botanical illustration including Streptanthella longirostris

botanical illustration including Streptanthella longirostris


Citation for this treatment: Ihsan A. Al-Shehbaz 2012, Streptanthella longirostris, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 24, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora,, accessed on April 24, 2019.

Streptanthella longirostris
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© 2016 Keir Morse
Streptanthella longirostris
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© 2010 Steve Matson
Streptanthella longirostris
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© 2009 Thomas Stoughton
Streptanthella longirostris
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© 2018 Steve Matson
Streptanthella longirostris
click for enlargement
© 2009 Thomas Stoughton
Streptanthella longirostris
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© 2004 James M. Andre

More photos of Streptanthella longirostris in CalPhotos

Geographic subdivisions for Streptanthella longirostris:
s SnJV, SCoRI, GB, D;
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, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.