生活型

herb

形態特徵

• Herbs or suffruticose at base, covered with septate hairs, to 80 cm tall; stems erect, square, puberulent.
• Leaves petiolate; petiole densely puberulent, 1–4 cm long; blades 5–15 cm long, 2–4 cm wide, elliptic to ovate, base cuneate, apex acute to acuminate, both surfaces sparsely puberulent, glandular dotted.
• Inflorescences verticillate cymes, forming loose terminal spikes or racemes; bracteoles elliptic to narrowly ovate, both surfaces glabrous, glandular dotted beneath, minutely hairy on margins, 3–4 mm long, 1–1.5 mm wide. Flowers pedicellate; pedicels minutely hairy, 1–2 mm long; calyx campanulate, minutely hairy or puberulent inside, glandular dotted, bilabiate, 3–4 mm long, upper lip broadly ovate, lower lip 3-toothed, 2 lateral teeth small, triangular, acuminate or spine tipped, middle tooth triangular, bifid; corolla tubular, 3–4 mm long, bilabiate, upper lip 4-lobed, lower lip undulate; stamens 4, lower pair longer.
• Nutlets ovoid, reticulate, ca. 1 mm wide.

分布

• 世界 : In tropical regions.

引證標本

TAIPEI: Suzuki 31382*. CHANGHUA: Tatsun, Huang 15126. PINGTUNG: Chinpeng, Huang et al. 17137.

參考文獻

• HUANG, Tseng-Chieng, HSIEH, Tsung-Hsin and CHENG, Wu-Tsang. 1998. Flora of Taiwan, second edition 4: 497. (Fl. Taiwan 2nd edit.)