生活型

herb

形態特徵

• Perennial erect herbs, 20–60 cm tall; rhizomes creeping, stoloniferous; stems quadrangular, purple, pubescent, with recurved purple hairs.
• Leaves opposite, chartaceous; petioles 0.5–1.3 cm long, with pubescent recurved hairs; blade 2.5–4 cm long, 1.2–2.0 cm wide, elliptic, apex acute or broadly acute, base acute or cuneate, decurrent into petiole, margins simply or doubly serrate, both surfaces with scattered recurved hairs; lower surface glandular dotted, usually purple.
• Flowers in pairs, in false whorls, opposite; inflorescences raceme-like, terminal, 3–7 cm long; bracts elliptic 4–10 mm long, puberulent; pedicels 4–5 mm long, recurved pubescent; calyx campanulate, bilabiate, 8 mm long, with puberulent sparsely recurved hairs along veins outside, with septate hairs in throat forming a ring inside, upper lip 3-lobed, middle lobe largest, broadly cordate-deltoid, concave, acuminate at apex, ca. 3 mm long, ca. 4 mm wide, lateral lobes triangular, acute, 1.5 mm long, lower lip 2-lobed, triangular, acute, ca. 3 mm long; corolla bilabiate, 16–18 mm long, white, upper lip deeply bilobed, lobes narrowly triangular, apex acuminate, puberulent, ca. 3 mm long, connate to lower lip, lower lip 3-lobed, middle lobe largest, boat-shaped, ca. 5 mm long; stamens 4, didynamous, exserted.
• Nutlets shallowly ridged, globose, 1.5–1.6 mm long, covered with glandular granules.
• Chromosome number 2n = 64.

物候

flowering time from August to September.

分布

• 台灣 : Meyfong, Nantou Hsien, growing along forest edge at altitudes of 2,100–2,200 m.

引證標本

NANTOU: Meyfong, Hsieh 1518 (Holotype, isotypes, TAI), Peng 15146, Lammers 8461.

參考文獻

• HUANG, Tseng-Chieng, HSIEH, Tsung-Hsin and CHENG, Wu-Tsang, Flora of Taiwan, second edition 4: 454. 1998.  (Fl. Taiwan 2nd edit.)