Tephroseris taitoensis

台灣狗舌草

endemic

Tephroseris taitoensis (Hayata) Holub

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

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Holub, Folia Geobotanica et Phytotaxonomica 8: 174. 1973. (Folia Geobot. Phytotax.)

同發表文獻

Senecio taitoensis Hayata

Hayata, Materials for a flora of Formosa 156. 1911. (Mat. Fl. Formos.)
Senecio subdentatus Ledeb. var. taitoensis (Hayata) Cufodontis

Cufodontis, Rep. Sp. Nov. Beih. Band 70: 83. 1933.
Senecio pierotii Miq. ssp. taitoensis (Hayata) Kitamura

Kitamura, Memoirs of the College of Science, Kyoto Imperial University. Series B. Biology 16: 243. 1942. (Mem. Coll. Sci. Kyoto Imp. Univ., Ser. B, Biol.)

herb

Rhizomatous herbs. Stems solitary, erect, 30–60 cm tall, sparsely arachnoid to subglabrous.
Radical leaves thin, rosulate, oblong, 10–30×3.5–8 cm, apex obtuse, base attenuate into winged petiole, margins subentire, irregularly dentate, glabrous on both surfaces; cauline leaves few, gradually smaller; lower leaves oblong to oblong-lanceolate, short-petiolate, semiclasping; upper leaves ovate-lanceolate to lanceolate, becoming linear and very small below inflorescence.
Corymbs compound. Heads many, to ca. 80 per corymb, 25–30 mm across. Involucre tubular, 6–7×12 mm, ecalyculate, corolla yellow, 15–23×2–3.5 mm. Disc florets: corolla light yellow, 7.5–9 mm long.
Achenes cylindric, 1.5–2 mm long, glabrous. Pappus white, 10–12 mm long.