亚热带植物科学 ›› 2022, Vol. 51 ›› Issue (2): 142-147.DOI: 10.3969/j.issn.1009-7791.2022.02.009

• 植物生态与资源分类 • 上一篇    下一篇

中国两种新归化植物——巴尔干大戟和假蒿

李世刚1,李宇然2,3,李萍萍1,王焕冲2,3*   

  1. (1. 云南大学生命科学学院,云南 昆明 650091;2. 云南大学生态与环境学院,云南 昆明 650091;3. 云南大学植物标本馆,云南 昆明 650091)
  • 出版日期:2022-04-30 发布日期:2022-08-03
  • 通讯作者: 王焕冲
  • 基金资助:
    国家自然科学基金(31960040);中国科学院战略性先导科技专项(XDA26010102-4)

Euphorbia oblongata (Euphorbiaceae) and Eupatorium capillifolium (Compositae), Two Newly Naturalized Plants for Flora of China

LI Shi-gang1, LI Yu-ran2,3, LI Ping-ping1, WANG Huan-chong2,3*   

  1. (1. School of Life Sciences, Yunnan University, Kunming 650091, Yunnan China; 2. School of Ecology and Environmental Science, Yunnan University, Kunming 650091, Yunnan China; 3. Herbarium, Yunnan University, Kunming 650091, Yunnan China)
  • Online:2022-04-30 Published:2022-08-03
  • Contact: WANG Huan-chong

摘要: 报道在云南发现的新归化植物,分别是大戟科巴尔干大戟(Euphorbia oblongata Griseb.)和菊科假蒿[Eupatorium capillifolium (Lam.) Small ex Porter & Britton], 凭证标本均保存于云南大学植物标本馆(YUKU)。巴尔干大戟原产于欧洲南部和西亚,现发现归化于云南省昆明市呈贡区;巴尔干大戟的主要鉴别特征是幼茎和花序轴密被白色长柔毛,蒴果球形,有瘤状突起,无毛。假蒿原产于美国南部,是园艺上广泛栽培的物种,现发现其在云南省大理州剑川县逸野归化;假蒿的主要鉴别特征是植株被柔毛,叶片近长卵形,2至3回羽状全裂,小裂片线形或长圆形,头状花序排成复总状,每个头状花序有小花5,花冠白色微绿。文中描述巴尔干大戟和假蒿的形态特征,并提供两种的野外生态照片;此外,对其可能的传入途径进行分析,简要评估入侵风险与危害。

关键词: 新归化, 大戟科, 菊科, 巴尔干大戟, 假蒿

Abstract: Two newly naturalized plants were reported from Yunnan Province, China, namely Euphorbia oblongata of Euphorbiaceae and Eupatorium capillifolium of Compositae. The voucher specimens for each reported species were deposited in the Herbarium of Yunnan University (YUKU). Euphorbia oblongata is native to southern Europe and western Asia, and was newly found in Chenggong County of Kunming, Yunnan Province, China. Euphorbia oblongata is characterized by its caulicle and inflorescence rachis densely white villous, and capsules?globose with verrucose-tuberculate, glabrous. Eupatorium capillifolium is native to southern United States, and is a species widely cultivated. We newly found its wild distribution in Jianchuan County of Dali, Yunnan Province, China. It is characterized by its stems puberulent throughout, leaf blades nearly long-ovate, 2 to 3 pinnatisect, lobules oblong or linear, capitulum arranged in a compound raceme, each with 5 small flowers, corolla white greenish. Their morphological description and related photos were provided as well. In addition, their potential introduced ways were discussed, and hazards as well invasive risks were briefly assessed.

Key words: newly naturalized, Euphorbiaceae, Compositae, Euphorbia oblongata, Eupatorium capillifolium

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