生活型

herb

形態特徵

• Perennial erect herbs, 40–60 cm tall; stem quadrangular, pubescent.
• Leaves opposite, chartaceous; petiole to 1 cm long, pubescent; blade 2.5–9 cm long, 1–2.5 cm wide, elliptic, apex acuminate, base cuneate to obtuse, margins serrate, upper surface glabrous or minutely pubescent, lower surface pubescent on veinlets, glandular dotted.
• Flowers in pairs, in false whorls, opposite; inflorescences raceme-like, terminal and axillary, to 3 cm long; foliaceous bracts elliptic, both surfaces pubescent; pedicels 3–4 mm long; calyx campanulate, bilabiate, 5 mm long, with septate hairs in throat forming a ring, upper lip 3-lobed, middle lobe largest, broadly ovate, concave; two lateral lobes transversely oblong; lower lip 2-lobed, adnate to 2/3 of lip, corolla bilabiate, ca. 10 mm long, white, upper lip deeply bilobed, lobes obliquely triangular, apex obtuse, connate to lower lip, lower lip 3-lobed, middle lobe largest, boat shaped, ca. 3 mm long; stamens 4, didynamous, exserted.
• Nutlets shallowly ridged, globose, ca. 1.2 mm long, covered with glandular granules.
• Chromosome number 2n = 32.

物候

Flowering time from August to December.

引證標本

HSINCHU: Kwanwu, Huang 4100. TAICHUNG: Lishan, Yang 2048. NANTOU: Between Kwankao and Tungpu, Huang 8596; between Loloku and Kwankao, Huang et al. 5261. HUALIEN: Suzuki 1732*; Tienchang, Suzuki 1786. KAOHSIUNG: Neiyingshan, Suzuki 20936. TAITUNG: Tienlong Bridge, Huang 3.

引用文獻

• HUANG, Tseng-Chieng, HSIEH, Tsung-Hsin and CHENG, Wu-Tsang, Flora of Taiwan, second edition 4: 542. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)
• Huang and Cheng, Flora of Taiwan 4: 472. 1978.  (Fl. Taiwan, 台灣植物誌)