生活型

herb

形態特徵

• Perennial herbs, decumbent to prostrate, 4.5-12 cm tall, glandular hairy.
• Phyllotaxis opposite or 3-leaves whorled; petiole 3-13 mm long, winged; blade ovate, base cuneate, margin crenate to double crenate, slightly reflexed, apex acute, strigose and glandular on both surfaces, 6-15 mm long, 3-12 mm wide.
• Flowers solitary, 2-3-flowered per node, axillary, pedicel 1-2.5 mm long; calyx deeply 5-lobed, lobes linear to lanceolate, apex acute, 3-4.5 mm long, persistent; corolla 5-7 mm long, bilabiate, violet with dark purplish nerves, sparsely hairy outside; upper lip slightly 2-lobed, lobes broadly ovate; lower lip 3-lobed, lobes ovate to broadly ovate, lower side of corolla tube pubescent inside; stamens 4, didynamous, inserted on 2/3 deep of corolla tube, anther with 2 thecae, thecae separate; fertile stamens 2, filament ca. 1.5 mm long, anther ca. 0.3 mm long; staminodes 2, longer than fertile stamens, filament ca. 2 mm long, anther ca. 0.2 mm long, shorter than fertile ones; pistil 1, ovary ellipsoid, slightly compressed, ca. 1.2 mm long, glabrous, with axile placentation, style 1.5-2 mm long, glabrous, persistent, stigma bilabiate.
• Capsule subglobose to ovoid, slightly compressed, brownish when mature, to 2.5 mm long, 2.5 mm wide, loculicidal and septicidal dehiscence. Seeds many, ellipsoid, gray, round on both apex, 8-rugose.

分布

• 台灣 : this species was found from at least three locations in the lowlands of northern Taiwan.
• 世界 : native to Mexico, northern S America, and the Caribbean.

引證標本

Taipei City, Wenshan District, Wanlong, 14 Mar 2010, M.-J. Jung 4889 (TNU). New Taipei City, Bali District, Bali, 23 Jun 2009, Y.-S. Liang s. n. (TNU); same loc., 10 Feb 2010, M.-J. Jung 4818 (TNU); Sanchi District, Sanchi, 6 Jun 2008, Y.-C. Kao s. n. (TAIF); same loc., 15 Jan 2010, M.-J. Jung 4708 (TNU).

參考文獻

• Yi-Shou Liang, Ming-Jer Jung, Sheng-Chieh Wu, Yui-Ching Kao and Jenn-Che Wang. 2011. Taiwania 56(1): 62-65.