生活型

herb

形態特徵

• Plants 5–30 cm long tall, glabrous. Stems much branched.
• Basal leaves short petiolate; leaf blade spatulate, 1–2 cm long including petiole, 8–10 mm long wide, base narrowed, apex rounded, veins 1–3. Cauline leaves sessile, oblong, elliptic, or ovate-elliptic, 0.8–2.2 cm long, 3–12 mm long wide, base rounded and nearly clasping, apex obtuse to rounded; veins 1–3, prominent.
• Cymess spicate. Flowers sessile. Calyx tubular, 3–4 mm long; lobes linear to narrowly elliptic, 6–8 mm long, apex obtuse, midvein prominent. Corolla white outside, pink inside, 1–1.3 cm long, tube narrowly tubular; lobes narrowly oblong 3–5 mm long, margin entire or serrulate, apex obtuse. Filaments 1.5–2 mm long; anthers ellipsoid, 0.5–0.7 mm long. Style 3–3.5 mm long.
• Capsules narrowly ellipsoid, 8–10 mm long. Seeds dark brown, globose, 0.3–0.5 mm long in diameter.
• Ho & Pringle (1995) reported a second taxon, Centaurium pulchellum var. altaicum (Griseb.) Kitagawa & Hara, from Taiwan. It differ from C. japonicum in having a dichotomous or racemoid inflorescence, pedicellate flowers and smaller calyx tube. After exami

分布

• 台灣 : Seacoasts in the north and east.
• 世界 : Japan, the Ryukyus.

引證標本

KEELUNG: Keelung, Matuda 1504. TAIPEI: Shihmen, Wang 3336; Homei, Huang 4287; Pitouchiao, Yang 3091. ILAN: Kueishan Island, Masamune & Suzuki s. n. 1932; Nanfangao, Huang 5079; Tali, Kuo 11073. HUALIEN: Fengping, Huang & Huang 14130. TAITUNG: Lanyu Island, Wang 5994; Lutao Island, Wang 6822.

引用文獻

• WANG, Jenn-Che, CHEN, Chih-Hsiung, LU, Chang-Tze and CHEN, Ya-Chi, Flora of Taiwan, second edition 4: 155. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)