Sigesbeckia orientalis

豨薟

Sigesbeckia orientalis L.

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

L., Species Plantarum 2: 900. 1753. (Sp. Pl.)

台灣首次記錄發表文獻

Hayata, The Journal of the College of Science, Imperial University of Tokyo, Japan 18: 17. 1906. (J. Coll. Sci. Univ. Tokyo)

異名

Sigesbeckia glabrescens (Makino) Makino

Makino, Journal of Japanese Botany 1: 25. 1918. (J. Jpn. Bot.)
Sigesbeckia formosana Kitamura

Kitamura, Acta phytotaxonomica et geobotanica eng 7: 87. 1937. (Acta Phytotax. Geobot.)
Sigesbeckia orientalis L. f. angustifolia Makino

Yamamoto, Journal of the Society of Tropical Agriculture 9: 87. 1937. (J. Soc. Trop. Agr.)

各語言俗名

中

小豨薟.
英

Common St. pailswort.
日

めなもみ. つくしめなもみ. こめなもみ.
原

Zyakorokoroosu (Paiwan). Tiyokurahai (Atayal). Betakkan (Atayal).
台

Liân chháu kìa sin. Khó chháu. Ti saí chhài. Hi chhiam chháu.

參考文獻

Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan)

特徵描述

生活型

herb

形態特徵

Annual herbs; stems erect, 20–100 cm tall, sometimes purplish, branches ascending-spreading, pseudo-dichotomously branching in upper part, densely or sparsely appressed short pubescent.
Median cauline leaves chartaceous or thinly membranaceous, long petiolate, ovate-oblong to deltoid-ovate, 5–14×3–12.5 cm, apex short acuminate to acute, base truncate to cuneate or narrowed into winged petiole, margins irregularly obtuse-dentate, 3-nerved, irregularly lobulate on lower margin, densely short pubescent on both surfaces, glandular dotted beneath; upper leaves gradually smaller and narrower, short petiolate, oblong, obtuse, uppermost oblong lanceolate, subsessile.
Heads many, 16–21 mm wide, peduncle 1–4.5 cm long, puberulous; involucral bracts 5, spreading, stipitate glandular pilose; ray corolla 1.5–2.5 mm long; disc corolla tubular, yellow, 1.5 mm long.
Achenes 2.5–3.5 mm long, truncate, incurved, black, glabrous, 4-angled.
Chromosome number, 2n = 30 (Peng & Hsu, 1978). <li>It is virtually impossible to effectively distinguish <i>S. orientalis</i> from <i>S. glabrescens</i>; they are thus treated as synonymous.</li>

分布

台灣 : widespread in waste fields at low elevations.
世界 : Southeast Asia, India to Africa, Australia, Japan and China.

引證標本

TAIPEI: Nankang, Wang 753; Shihting, Peng 10598. ILAN: Chiaohsi, Lungtanhu, Liu 551; Yuanshan experimental forestry farm, Panero 6453. HSINCHU: Emei, Wang 727; Hsinfeng, Hongmaokang, Peng 13977. MIAOLI: Shihtan, Leu 923; Chunan, Lin 590. TAICHUNG: Takeng, Peng 9977; Kukuan, Peng 8722. NANTOU: Tungpu, Peng 6486; Hsinyi, Peiyushan, Chiang 105. KAOHSIUNG: Tengchih, Yang 5100. PINGTUNG: Wutai, Peng 10201; Chunjih, Tahan Forest Trail, Leu 644. TAITUNG: Lanyu Is., Yang 7745; Chingshuiyen, Yang 23731. HUALIEN: Hsiulin, Yenhai Forest Road, Wang 395.