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Hecastocleis
Hecastocleis is a genus of low thorny shrubs with stiff branches, assigned to the daisy family. At the tip of each of the branches, inflorescences are subtended by oval, thorny, whitish to greenish bracts that enclose several flower heads which each contain only one pinkish bud, opening into a white corolla. It contains but one species, Hecastocleis shockleyi, the only representative of the tribe Hecastocleideae, and of the subfamily Hecastocleidoideae. Its vernacular name is prickleleaf. It is confined to the southwestern United States.
Prickleleaf is native to the desert plains and mountains of eastern California (Inyo, Mono, Kern, and San Bernardino Counties) and southern Nevada (Mineral, Esmeralda, Nye, Lincoln, and Clark Counties), where it grows on arid, rocky slopes and flats. Records of this plant include Mount Charleston, Nevada Test Site, Grapevine Mountains and Red Pass.
Text excerpted from the Wikipedia article Hecastocleis by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
