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Ambrosia chenopodiifolia
''Ambrosia chenopodiifolia'' is a species of ragweed known by the common names San Diego bursage and San Diego bur ragweed.〔(''Ambrosia chenopodiifolia''. ) NatureServe. 2012.〕 It is native to the Mexican states of Baja California and Baja California Sur (Comondu Municipality),〔(Payne, Willard William 1964. Journal of the Arnold Arboretum 45(4): 419 )〕 as well as to Orange〔(Calflora taxon report, University of California @ Berkeley, ''Ambrosia chenopodiifolia'' (Benth.) Payne San Diego bur sage, San Diego bursage )〕 and San Diego Counties it int US State of California.〔(Flora of North America Vol. 21 Page 14 ''Ambrosia chenopodiifolia'' (Bentham) W. W. Payne, J. Arnold Arbor. 45: 419. 1964 )〕 It is a member of the coastal sage scrub plant community.
==Description==
''Ambrosia chenopodiifolia'' is a thickly branching shrub exceeding 3 meters in maximum height. The leaves are ovals up to 3 centimeters long and coated in white hairs. They are sometimes lobed.〔
Like other ragweeds it is monoecious, with each inflorescence bearing heads of pistillate (female) flowers below a cluster of staminate (male) flowers. The inflorescence is spiny, especially when in fruit. The fruit is a spherical, woolly bur about half a centimeter long covered in hooked spines.〔
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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