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Hecastocleis
''Hecastocleis'' is a genus of plants in the daisy family containing the single species ''Hecastocleis shockleyi''.〔(Gray, Asa. 1882. Proceedings of the American Academy of Arts and Sciences 17: 220–221 ) description in Latin, commentary in English〕〔(Tropicos, ''Hecastocleis'' A. Gray )〕 It is known by the common name prickleleaf. This plant is native to the desert mountains and plains of eastern California (Inyo, Mono, Kern, + San Bernardino Counties) and southern Nevada (Mineral, Esmeralda, Nye, Lincoln, + Clark Counties), where it grows on arid, rocky slopes and flats.〔(Biota of North America Program 2013 county distribution map )〕〔(Flora of North America, Vol. 19, 20 and 21 Page 71, ''Hecastocleis'' A. Gray )〕〔(Calflora, ''Hecastocleis shockleyi'' A. Gray, Shockley's prickleleaf, prickleleaf )〕
==Description==
This is a low, brambly shrub producing a tangle of stiff, branching stems reaching heights between 40 and 70 centimeters. The stems have sparse glandular hairs and are lined with small pointed green leaves with a row of widely spaced spines along each edge. As the leaf dries and its flesh falls away, the spines remain as hard prickles.〔
At the end of stem branches are solitary flower heads, each enclosed between flat, oval-shaped, sharply toothed, leaflike, pale green bracts. Between the bracts are the flowers, which have a white, rarely white-pink corolla. The corollas are mostly actinomorphic, rarely zygomorphic. The fruit is a cylindrical achene.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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