|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Brassicaceae (Cruciferae)||View Description||Dichotomous Key|
|Genus: Streptanthus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Streptanthus oblanceolatus T.W. Nelson & J.P. Nelson
Habit: Biennial, glabrous. Stem: 5--10 dm, branched distally. Leaf: basal rosetted, oblanceolate, coarsely dentate; mid-cauline sessile, 2--10 cm, lance-linear, entire, base lobed; distal much-reduced. Inflorescence: open; terminal sterile flower cluster 0; bracted proximally or between most proximal 1--2 flowers. Flower: sepals 8--9 mm, +- keeled, yellow; petals 12--16 mm, recurved at tip, not crinkled, +- yellow, adaxial pair +- longer; filaments in 3 pairs of unequal length; longest pair fused to above middle, 13--16 mm, lower pair free, 9--11 mm; anthers fertile, 3--3.5 mm. Fruit: spreading-ascending, 4--8 cm, 1.5--2 mm wide, constricted between seeds, valves glabrous; stigma entire; pedicel ascending, 3--6 mm, strongly expanded at receptacle. Seed: +- 2 mm, oblong, wing distal.
Ecology: Cliffs, canyon walls, in conifer forest; Elevation: +- 400 m. Bioregional Distribution: KR. Flowering Time: Jun--Jul Note: Narrowly endemic to Box Canyon, Trinity River, Trinity Co.
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Streptanthus morrisonii
Next taxon: Streptanthus oliganthus
Citation for this treatment: Ihsan A. Al-Shehbaz 2017. Streptanthus oblanceolatus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=91788, accessed on January 21, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 21, 2017.