Aster ovalifolius

台灣紺菊

endemic

Aster ovalifolius Kitam.

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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名彙資訊

學名發表文獻

Kitam., Acta phytotaxonomica et geobotanica eng 1: 289. 1932. (Acta Phytotax. Geobot., 植物分類,地理)

台灣首次記錄發表文獻

同發表文獻

異名

Aster baccharoides auct. non Steetz

Forbes & Hemsl., The journal of the Linnean Society of London. Botany 23: 409. 1888. (J. Linn. Soc., Bot.)

各語言俗名

中

卵葉紫菀.
日

しまこんぎく. たいわんこんぎく.

參考資料

Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan, 台灣植物名彙)

特徵描述

生活型

herb

形態特徵

Perennial suffrutescent erect herbs, sparsely branched, stems terete, 40–100 cm tall, tomentose, densely branching in inflorescence.
Cauline leaves dense, alternate, slightly chartaceous, ovate to narrowly ovate, 3.5–5 cm long, 1.5–2 cm wide, apex acute, base rounded, sessile or short petiolate, margins sparsely dentate apically with 2–4 pairs of teeth, hispidulous on both surfaces, lower surface glandular punctate, trinerved at base; basal leaves withered at anthesis.
Heads many in paniculate-corymbose inflorescences, 6–10 mm across; peduncle 5–15 mm long. Involucre turbinate or campanulate, 6–7 mm tall, 5–6.5 mm across. Bracts 4 or 5 seriate, entire, oblong-lanceolate, apex obtuse to round, margins ciliate; outermost bracts smaller, 1.5–2 mm long, inner bracts gradually longer, to 4–4.5 mm long, obtuse. Receptacle alveolate. Ray florets in 1 series, ligules white, 7–8 mm long, 1.5 mm wide. Disc florets 4–4.5 mm long. Pappus dirty white or reddish-brown, 4.5 mm long.
Achenes oblong, slightly compressed, 2 mm long, 0.8 mm broad, strigose.

物候

Fl. Aug.

分布

台灣 : at low elevations in the north, sometimes on seaside hills, rare.

引證標本

TAIPEI: Mt. Tatunshan, Nagasawa s. n. 1905; Sanhsia (Mt. Yuanshan), Koyama 23487. HSINCHU: Hsinchu City, Shimada 462E (TYPE!); Hsiangshan, Shimada 4348b. NANTOU: Nakahara 331; Mori 1174.