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|Jepson eFlora: Taxon page
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|Family: Brassicaceae (Cruciferae)||View Description||Dichotomous Key|
|Genus: Thelypodium||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Thelypodium howellii S. Watson subsp. howellii
Habit: Biennial, glaucous; hairs 0 except on petiole. Stem: 1--9 dm, simple or branched distally. Leaf: basal blade 2--10(13.5) cm, lyre-shaped (dentate or entire), withered by fruit time, petiole ciliate; mid-cauline sessile, sagittate to clasping, entire. Inflorescence: open, much expanded in fruit. Flower: petals 5--8(12) mm, 0.5--1.2(3) mm wide, narrowly oblanceolate, lavender to purple, not crinkled; paired filaments partly to completely fused. Fruit: 1.5--4.5(7) cm, cylindric, narrowed between seeds; stalk above receptacle 0.5--1(3.5) mm; style (0.5)1--2.7(4) mm; pedicel ascending, 3--8(14.5) mm, stout, straight or +- curved. Seed: 22--40, 1--1.7(2) mm, plump. Chromosomes: 2n=26.
Ecology: Alkaline meadows, flats, sagebrush scrub; Elevation: 1000--1600 m. Bioregional Distribution: MP; Distribution Outside California: to Washington. Flowering Time: May--Jul Note: Other subsp. in eastern Oregon only.
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Thelypodium flexuosum
Next taxon: Thelypodium integrifolium
Citation for this treatment: Ihsan A. Al-Shehbaz 2016. Thelypodium howellii subsp. howellii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=53180, accessed on May 03, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 03, 2016.