Senecio nemorensis var. dentatus

黃菀

endemic

Senecio nemorensis L. var. dentatus (Kitam.) H. Koyama

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

H. Koyama, Memoirs of the Faculty of Science, Kyoto University, Series of Biology 2(2): 152. 1969. (Mem. Fac. Sci. Kyoto Univ., Ser. Biol.)

台灣首次記錄發表文獻

同發表文獻

異名

Senecio taiwanensis Hayata

Hayata, Materials for a flora of Formosa 157. 1911. (Mat. Fl. Formos.)
Senecio angustifolia Hayata

Hayata, Materials for a flora of Formosa 154. 1911. non Willd., nec Wall. (Mat. Fl. Formos.)
Senecio tozanensis Hayata

Hayata, Materials for a flora of Formosa 158. 1911. (Mat. Fl. Formos.)
Senecio morrisonensis Hayata var. dentatus Kitam.

Kitam., Acta phytotaxonomica et geobotanica eng 4: 274. 1937. (Acta Phytotax. Geobot.)
Senecio nemorensis auct. non L.

Yamamoto, Journal of the Society of Tropical Agriculture 9: 89. 1937. (J. Soc. Trop. Agr.)
Senecio nemorensis L. var. taiwanensis (Hayata) Yamamoto

Yamamoto, Journal of the Society of Tropical Agriculture 9: 89. 1937. (J. Soc. Trop. Agr.)
Senecio nemorensis L. ssp. fuchsii (Gmelin) Durand

Kitamura, Acta phytotaxonomica et geobotanica eng 6: 273. 1937. (Acta Phytotax. Geobot.)

各語言俗名

中

金花草. 林蔭千里光. 金里光. 狹葉玉山黃菀.
日

ひごおみなえし. きおん. にいたかきおん.

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

Perennial herbs from short rhizomes. Stems erect, simple, striate, 50–100 cm tall, leafy, branched in upper part.
Leaves radical and cauline; radical and lower cauline leaves withering before flowering; median cauline leaves lanceolate to ovate-oblong; apex acuminate to tapering; base narrowly cuneate, decurrent, 11–20(–25)×0.8–2.7 cm, subsessile, margins serrate to dentate.
Heads radiate, in compound corymbs; peduncle slender; bracteoles linear. Involucral bracts ca. 4.5–6×1.5 mm, apex brownish purple, ciliate, densely hairy on outer surface, margins scarious. Ray florets 5 or 6, yellow, 11–15×2.8–3 mm, tube 3.5–5 mm long; disc florets 5.5–6.7 mm long.
Achenes cylindric, 3.5–4 mm long, glabrous to hairy. Pappus ca. 5 mm long.
Senecio nemorensis var. dentatus differs from the typical variety in having fewer ray florets (5 or 6 vs. 8–11) and narrower leaves. Separation of S. nemorensis var. dentatus and S. morrisonensis is often difficult. Many variously intermediate forms are observed and recognition of the two taxa is to a large extent arbitrary.

分布

台灣 : forest margins, exposed road cuts in forests, and alpine meadows, 1,600 to 3,500 m.

引證標本

ILAN: Nanhutashan, Chen 14; Taipingshan, Peng 10331. HSINCHU: Yuanyanghu, Chen 162. MIAOLI: Tapachienhshan, Peng 8439. NANTOU: Nengkaoshan, Kelley 143–98. KAOHSIUNG: Kuanshan, Chung 1059-A. TAITUNG: Takuanshan, Peng 11718. HUALIEN: Mukuashan, Peng 7359; Chingshuishan, Leu 1808.