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Streptanthus longisiliquus
LONG-FRUIT JEWELFLOWER

Higher Taxonomy
Family: Brassicaceae (Cruciferae)View DescriptionDichotomous Key

Common Name: MUSTARD FAMILY
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

Common Name: JEWELFLOWER
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)

Streptanthus longisiliquus G.L. Clifton & R.E. Buck
NATIVE
Habit: Perennial herb, short-lived, glabrous except sepals, occasionally petioles; caudex simple or few-branched. Stem: 2.2--12(15) dm, few-branched. Leaf: petioles glabrous (ciliate); basal rosetted in youth, obovate to spoon-shaped; mid-cauline sessile, 2.5--10 cm, broadly oblong to ovate or +- round, entire, base clasping; distal reduced. Inflorescence: open; terminal sterile flower cluster 0. Flower: calyx +- bell-shaped, sepals 6--8 mm, oblong, not keeled, +- yellow-green proximally, purple distally, tufted-hairy proximal to tip; petals 8--12 mm, 0.5--0.8 mm wide, purple to +- brown, proximal halves yellow-green; filaments free, in 3 pairs of unequal length, longest pair 7--10 mm; anthers fertile, 3.5--5 mm. Fruit: recurved, descending, 5--13(15) cm, 2--2.5 mm wide, +- constricted between seeds; valves glabrous, midvein distinct; stigma entire; pedicels spreading-ascending, 5--10 mm, straight. Seed: 50--82, 2.2--3 mm, oblong; wing 0.1--0.4 mm wide, continuous.
Ecology: Openings in pine forest, oak woodland; Elevation: 400--1700 m. Bioregional Distribution: e KR, CaR. Flowering Time: May--Jul
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Streptanthus insignis subsp. lyonii
Next taxon: Streptanthus morrisonii

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Citation for this treatment: Ihsan A. Al-Shehbaz 2016. Streptanthus longisiliquus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=82343, accessed on February 13, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 13, 2016.


Streptanthus longisiliquus
click for enlargement
© 2007 George W. Hartwell
Streptanthus longisiliquus
click for enlargement
© 2007 George W. Hartwell
Streptanthus longisiliquus
click for enlargement
© 2009 George W. Hartwell
Streptanthus longisiliquus
click for enlargement
© 2007 George W. Hartwell
Streptanthus longisiliquus
click for enlargement
© 2009 George W. Hartwell
Streptanthus longisiliquus
click for enlargement
© 2009 George W. Hartwell

More photos of Streptanthus longisiliquus in CalPhotos


Geographic subdivisions for Streptanthus longisiliquus:
e KR, CaR.
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.
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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.