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''Physaria lepidota,'' common name Kane County twinpod, is a plant species endemic to Utah. It is known only from Kane, Washington, and Garfield Counties in the southern part of the state.〔(USDA Plant Resources Conservation Service, Plants Profile )〕 It grows on rocky slopes and outcrops, and sometimes in disturbed areas.〔(Flora of North America v 7 p 648 ).〕 ''Physaria lepidota'' is a perennial herb with most of the above-ground parts covered with a silvery pubescence. Stems branch at the base but rarely above, sometimes reaching a height of 20 cm (8 inches). Flowers are yellow, born in a dense raceme. Fruits are highly inflated, up to 20 mm (0.8 inches) across with purplish papery walls.〔 Rollins, R. C. 1981. Studies in the genus ''Physaria'' (Cruciferae). Brittonia 33(3): 332–341.〕〔Holmgren, N. H., P. K. Holmgren & A.J. Cronquist. 2005. Vascular plants of the intermountain west, U.S.A., subclass Dilleniidae. 2(B): 1–488. In A.J. Cronquist, A. H. Holmgren, N. H. Holmgren, J. L. Reveal & P. K. Holmgren (eds.) Intermountain Flora. Hafner Publishing Co., New York. 〕 ==Subspecies== Despite the limited range of the species, two subspecies are generally recognized, differing in the shapes of the fruits and of the hairs in the pubescence:〔(O'Kane, Steve Lawrence. Novon 17(4): 531. 2007. )〕〔(Rollins, Reed Clark. Studies in the genus Physaria (Cruciferae). Brittonia 33(3): 338. 1981. )〕 ''Physaria lepidota'' subsp. ''lepidota'' and ''Physaria lepidota'' subsp. ''membranacea'' The two subspecies also differ in chromosome number (2n=16 for subsp. ''lepidota'', 2n=8 for subsp. ''membranacea'').〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Physaria lepidota」の詳細全文を読む スポンサード リンク
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