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假臭草Praxelis clematidea

时间:2013-07-23 14:40来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):假臭草 学名( Scientific Name ): Praxelis clematidea (Griseb.) R. M. King et H. Rob. 英文名( English Common Name ): 别名( Chinese Common Name ): 猫腥菊 异名( Synonym ): Eupatorium catarium Veldkamp Eupa






中文名(Chinese Name):假臭草
学名(Scientific Name):Praxelis clematidea (Griseb.) R. M. King et H. Rob.
英文名(English Common Name):
别名(Chinese Common Name):猫腥菊
异名(Synonym):Eupatorium catarium Veldkamp  Eupatorium urticifolium var. nana Hieron. 
科属(Family & Genus):菊科(Compositae)假臭草属
形态特征(Description):
分布(Distribution):产南美,现已归化于东半球热带及亚热带地区。
用途(Use):
引自中国植物志英文版FOC Vol. 20-21 Page 889
Praxelis clematidea R. M. King & H. Robinson, Phytologia. 20: 194. 1970.
假臭草 jia chou cao| Asteraceae  | Praxelis
Eupatorium clematideum Grisebach, Abh. Königl. Ges. Wiss. Göttingen 24: 172. 1879, not (Wallich ex Candolle) Schultz Bipontinus (1866); E. urticifolium Linnaeus f. var. clematideum Hieronymus ex Kuntze; E. catarium Veldkamp.
Subshrubs or annual herbs, to 0.6 m tall. Stems erect or ascending, bright green, simple or poorly branched at base, leafy throughout except at base, pubescent throughout, hairs simple, eglandular. Leaves opposite, rank-smelling; petiole 3-7 mm; blade ovate, 20-35 × 12-25 mm, pubescent below, hairs long, simple, eglandular along venation, stipitate glandular and gland-dotted between veins, base attenuate, margin coarsely serrate, apex acute. Synflorescence terminal, corymbose, capitula pedunculate; peduncles 4-7 mm, pubescent; involucre narrowly campanulate, 4-5 mm in diam.; phyllaries 2- or 3-seriate, with scattered short simple eglandular hairs at base, glabrous apically, margin ciliate, apex long attenuate; receptacle conical, epaleate. Florets 35-40; corollas bright lilac-blue, ca. 4.5 mm; corolla lobes long papillose on inner surface, usually glabrous outside or with few simple eglandular hairs; anther appendages longer than wide, apex acute; style base not swollen, glabrous, bright lilac-blue; style branches coarsely papillose. Achenes 2-2.5 mm, 3-5-ribbed, ribs pale, setuliferous or glabrous, body black, with scattered setulae; pappus setae 3.5-4.5 mm, coarsely barbellate, off-white. Fl. and fr. often year-round.
Introduced and becoming naturalized in Guangdong and Taiwan [widespread in South America, becoming weedy in many cultivated areas; introduced and becoming naturalized in E Asia and N Australia].
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