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|Jepson eFlora: Taxon page
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|Family: Fabaceae (Leguminosae)||View Description||Dichotomous Key|
|Genus: Astragalus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Astragalus asymmetricus E. Sheld.
Habit: Perennial herb, clumped; finely silky-strigose, some hairs near top longer, more spreading. Stem: erect, 5--12 dm, stout, often hollow. Leaf: 5--20 cm; midrib stiff, often curved; stipule sheaths present; leaflets 17--35, 6--25 mm, linear to +- elliptic, tips obtuse or shallowly notched. Inflorescence: flowers 15--45, early spreading, quickly reflexed. Flower: calyx tube 5--7 mm; petals +- cream, banner 12.6--17.6 mm, +- recurved, margins abruptly folded back, keel 11.5--14.7 mm. Fruit: pendent; body 25--40 mm, 13--18 mm wide, bladdery; stalk-like base 1.4--4 cm, arched, sparsely strigose; upper suture +- concave to +- convex, lower strongly convex; beak triangular; chamber 1; ovules 16--30. Chromosomes: 2n=22.
Ecology: Grassy areas, open woodland, disturbed sites; Elevation: 50--900 m. Bioregional Distribution: NCoRI, GV, SnFrB, SCoR. Flowering Time: Apr--Jul Note: Like Astragalus curtipes, Astragalus oxyphysus, Astragalus trichopodus, but differs in calyx length, stalk-like base of fruit (length, hairs, presence or position of joint), ovule number. Weedy, poisonous to stock.
eFlora Treatment Author: Martin F. Wojciechowski & Richard Spellenberg
Jepson Online Interchange
Previous taxon: Astragalus aridus
Next taxon: Astragalus atratus var. mensanus
Citation for this treatment: Martin F. Wojciechowski & Richard Spellenberg 2016. Astragalus asymmetricus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=14702, accessed on February 08, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 08, 2016.