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''Ambrosia ilicifolia'' is a species of ragweed known by the common names hollyleaf burr ragweed and hollyleaf bursage.〔(Calflora taxon report, University of California, ''Ambrosia ilicifolia'' (A. Gray) Payne holly leaved burbush, hollyleaf bursage )〕 It is native to the deserts and mountains of western Arizona, and the adjacent Sonoran Desert areas of southeastern California, Sonora and Baja California. It grows in dry washes, scrub, and other local habitats.〔(Flora of North America Vol. 21 Page 12 Ambrosia ilicifolia (A. Gray) W. W. Payne )〕〔(Biota of North America Program 2014 county distribution map )〕 ==Description== ''Ambrosia ilicifolia'' is a small, matted shrub under in height. Its stiff, straight branches are green, glandular, and leafy when young, and light gray and leafless when older. The holly-like leaves are leathery but brittle, oval-shaped to rounded, and edged with spine-tipped teeth. They are green, veiny, and sticky with resin.〔〔(Payne, Willard William 1964. Journal of the Arnold Arboretum 45(4): 425 )〕 The inflorescence holds several spiny staminate (male) flower heads next to larger pistillate (female) heads. Each pistillate head produces usually two fruits, which are yellow-brown burrs nearly 2 centimeters wide. Each burr is rounded, sticky, and covered in hooked spines.〔(Jepson Manual Treatment — ''Ambrosia ilicifolia'' )〕 The name ''ilicifolia'' is from the ''Ilex'', scientific name for the genus containing hollies, plus "folius," Latin for "leaf." 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「Ambrosia ilicifolia」の詳細全文を読む スポンサード リンク
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