生活型

herb

形態特徵

• Perennial, erect, rhizomatous herbs, stems terete, 10–25 cm tall, stems unbranched or branched upward, scabrous.
• Radical leaves lanceolate-oblong to elliptic, apex acute, base cuneate to winged petiole, 1–2 cm long, 5–10 mm wide, margins sparsely mucronulate-serrate, hispid on both surfaces, lower surface glandular; petiole 1–1.5 cm long. Medium cauline leaves elliptic to lanceolate-oblong, 1–2.5 cm long, 4–10 mm wide, nearly sessile, remotely mucronulate-serrate, hispid and scarcely glandular on both surfaces, upper leaves gradually smaller.
• Heads 1–2 cm across, few in loose corymbs, or sometimes solitary and terminal; peduncle ca. 1–3 cm long, densely scabrescent. Involucre hemispheric to campanulate, ca. 4.5 mm tall, 5.5–6.3 mm across. Bracts 3- or 4-seriate, linear to narrowly lanceolate, outer bracts smaller, ca. 3 mm long, inner bracts 4–4.5 mm long, ca. 0.5 mm wide, puberulous on outer surface, herbaceous, green, sometimes purplish. Ray florets 10–18, in one row, ligules white, 4.5–5.5 mm long, ca. 1 mm wide. Disc florets yellow, ca. 4 mm long.
• Achenes oblong, compressed, ca. 2 mm long, sericeous, pappus pale tawny, 3–4 mm long.
• <i>Aster chingshuiensis</i> has oblong leaves with acute apices, and is distinguished from <i>A. morrisonensis</i> which has lanceolate leaves with acuminate apices. Plants collected around Mt. Luanshan are similar to <i>A. chingshuiensis</i>. They grow in the same habitat as<i> A. chingshuiensis</i> on limestone in high mountains, but they have more leaves evenly scattered on the stems, shorter nodes, thicker leaves and more evident veins than <i>A. chingshuiensis</i> on Mt. Chingshui. It seems reasonable to refer to these plants as <i>A. chingshuiensi</i>s for the time being, but further research on the plants of Mt. Luanshan is needed. The specimens are as below: <li>Hualien: Lanshan, <i>Tamura et al. 21643, Tamura et al. 21599, Hsu & Hsu 3666</i>. One specimen collected between Chilai and Shuilien (<i>Liu 1544</i>) is intermediate between the plants of Mt. Chingshui and Lanshan.</li>

物候

Fl. (Mar-) Jun-Jul (-Aug).

分布

• 台灣 : sunny, gravelly, limestone ridges; 2,000–2,500 m, rare.

引證標本

HUALIEN: Panpien to Chilai, Shimizu 11348; Mt. Chingshui, Liao s. n. 1978 (Holotype!), Leu 1773, Ho 1251.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 850. 1998.  (Fl. Taiwan 2nd edit.)