生活型

herb

形態特徵

• Plants from stout rhizomes, stems simple, slender, to 100 cm long.
• Radical leaves thin chartaceous; petiole 40 cm long, not winged, clasping at base; blade hastate-cordate to reniform-hastate, 24×17–20 cm; cauline leaves 3, lower one with sheathing base, upper leaves smaller.
• Inflorescence densely racemose, densely puberulous. Involucre tubular, 10–12×2.5–3 mm, subtended by linear lanceolate bract-like leaves, bracts 5, minutely puberulous. Ray florets 1–3, or absent; corolla 20–25×3–4 mm, pistillate, tube 5–9 mm long. Disc florets 6–12, bisexual, corolla tubular, 11–15 mm.
• Achenes oblanceolate, slightly compressed, 6–7 mm long. Pappus white or light brown, bristles many, unequal.
• Japanese specimens of <i>L. stenocephala</i> nearly always have triangularly hastate leaves with the apex abruptly acuminate and densely many headed racemes. In Taiwan most individuals have cordate-reniform leaves with the apex not distinctly acuminate and racemes with more loosely spaced heads. We suspect that hybrid individuals between <i>L. stenocephala</i> and <i>L. kojimae</i> exist in Taiwan.

分布

• 台灣 : moist habitats in mountains, 1,600–2,800 m.
• 世界 : Japan and China.

引證標本

ILAN: Szuyuan to Nanshan, Lu 207. HSINCHU: Itseshan, Hsieh 1298. TAICHUNG: Yunling Lodge, Hsu 769. NANTOU: Nanhuashan, Kelley 214–98. HUALIEN: Nengkaoshan, Sasaki s. n. 1929.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 1014. 1998.  (Fl. Taiwan 2nd edit.)