Ageratina adenophora
假藿香薊
naturalized
Ageratina adenophora (Spreng.) R. M. King & H. Rob.
名彙資訊
特徵描述
典藏標本
數位照片
分布位置
相關資訊
名彙資訊
學名發表文獻
R. M. King & H. Rob., Phytologia 19(4): 211. 1970.
台灣首次記錄發表文獻
Peng, Chung & Leu, Taiwania 43(4): 320. fig. 1. 1998.
異名
無
各語言俗名
-
中紫莖澤蘭.
參考文獻
特徵描述
生活型
herb
形態特徵
- Perennial coarse herbs to 1.5 m tall; stems often purple, terete, erect, glandular puberulent.
- Leaves opposite, median ones larger, ovate-deltoid, 7–10 cm long, 4–7 cm wide, apex acuminate, base obtuse to very broadly cuneate or truncate, sparsely pilose on both surfaces, 3-nerved, margins crenate, petiole 4–5 cm long, upper leaves gradually smaller toward inflorescence.
- Inflorescence of loose compound corymbs, heads ca. 6.5 mm long, 6 mm in diam., peduncle 8–14 mm long, densely pubescent; involucre cylindric, ca. 3–4 mm long; bracts ca. 25, 3 or 4 seriate, outer ones narrowly lanceolate, inner ones narrowly oblong, apex acute, base obtuse, margins membranaceous, ciliate; florets ca. 70–80, white; receptacle glabrous, areolate.
- Achenes black, 1.5 mm long, 5-angular, glabrous. Pappus of 8–10 bristles, ca. 3.5 mm long.
分布
- 世界 : Native of Mexico, California and the West Indies, widely adventive in tropical areas.
引證標本
KAOHSIUNG: Tengchih, Yen 4616. TAITUNG: Litao, Chen 14333.