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Ragweeds (Ambrosia spp.)―The Hay Fever Weeds

机译:豚草(Ambrosia spp。)-干草热杂草

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摘要

Collectively, the ragweeds are one of the United States' few serious native weeds. They are members of the Aster-aceae (Compositae), but for at least a century they were in their own family, the Ambrosieae (a small family of about 55 native American taxa), having been separated from Compositae for convenience in 1828 by Ludwig [Heinrich Gottlieb] Reinchenbach (1793-1879), in his Conspectus regni vegtabilis (9). Ultimately, the ragweeds were placed in the Asteraceae (8, 18). The genus Ambrosia includes Franseria Cav. The new line up: 24 cosmopolitan species, 1 European (20).
机译:总的来说,豚草是美国少数几种严重的本土杂草之一。它们是菊科(菊科)的成员,但至少有一个世纪以来,它们属于自己的家庭,即安布罗素科(Ambrosieae)(约有55个美洲原住民分类单元的小家族),为方便起见,于1828年与菊科分开。 [海因里希·戈特利布(Heinrich Gottlieb)] Reinchenbach(1793-1879),在他的《 Conspectus regni vegtabilis》(9)中。最终,豚草被放入菊科(8,18)。 Ambrosia属包括Franseria Cav。新的阵容:24种世界性物种,1种欧洲人(20)。

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