生活型

herb

形態特徵

• Perennial erect herbs, 20–60 cm tall; rhizomes creeping, stoloniferous; stems quadrangular, puberulent with recurved hairs.
• Leaves opposite, chartaceous; petioles 1–3 cm long, with recurved hairs; blade 4–7 cm long, 2–4 cm wide, ovate, apex acute or broadly acute, base cuneate to rounded, margins simply or doubly crenate-serrate, both surfaces pubescent with scattered hairs.
• Flowers in pairs, in false whorls, opposite; raceme-like inflorescences terminal or axillary, 3–10 cm long; rachis densely short pubescent; bracts linear-lanceolate, acuminate, 3–5 mm long, puberulent; pedicels ca. 1 mm long, puberulent; calyx campanulate, slightly bilabiate, 3–4 mm long, densely glandular puberulent outside, 5-lobed, upper 3 lobes deltoid-ovate to triangular, ca. 1 mm long, lower 2 narrowly ovate, ca. 1.5 mm long; corolla bilabiate, 7–9 mm long, purple, upper lip deeply bilobed, lobes narrowly ovate, obtuse, connate to lower lip, lower lip ca. 4 mm long, 3-lobed, middle lobe largest, boat-shaped; stamens 4, didynamous, exserted.
• Nutlets shallowly ridged, globose, 1.2–1.4 mm long.
• Chromosome number 2n = 32.

分布

• 世界 : Japan, Korea, C. to S. China, Indochina, the Philippines, Malaysia and India.

引證標本

TAIPEI: Wulai, T. H Hsieh 1524. ILAN: Tuchang, Chang s. n. 1944; Piyamansya, Sasaki s. n. 1922. HSINCHU: Kwanwu, Huang 4108. MIAOLI: Tahu, Hayata & Mori s. n. 1908. TAICHUNG: Syasi, Sasaki s. n. 1923. NANTOU: Tungpu to Tentzu, Huang 5700; Tailukotashan, Suzuki 10938; Wallami, Chiang 15. PINGTUNG: Santimen, Hosokawa 5455; Shouka, Chen 840.

參考文獻

• HUANG, Tseng-Chieng, HSIEH, Tsung-Hsin and CHENG, Wu-Tsang, Flora of Taiwan, second edition 4: 545. 1998.  (Fl. Taiwan 2nd edit.)