生活型

herb

形態特徵

• Branched herbs to 80 cm tall; stems erect or decumbent at base, quadrangular, slightly pubescent.
• Leaves linear-lanceolate or oblanceolate, 3–8 cm long, 7–15 mm wide, apex acute or obtuse, base narrowed to a short petiole, margins nearly entire, both surfaces slightly hirsute.
• Flowers sessile; bracts leaf-like; bracteoles small, shorter than calyx; calyx ca. 9 mm long, segments subulate, sparingly hirtellous; corolla pale purplish, to 1.8 cm long, puberulent without, limb bilabiate, lips subequal, ca. 8 mm long, upper lip triangular, concave, lower lip elliptic, convex, barbate within; stamens inserted near apex of tube, filaments glabrous; ovary linear-oblong, glabrous; style ca. 1.3 cm long, sparingly strigose.
• Capsule oblong-cylindric, to 2 cm long.

分布

• 台灣 : throughout the island in wet places.
• 世界 : India to China, Malaysia and the Philippines.

引證標本

ILAN: Suzuki. TAICHUNG: Shihkang, Sasaki s. n. 1922. TAINAN: Matou, Morimoto s. n. 1941. PINGTUNG: Matuda 666; Nanjenshan, Huang 4863. TAITUNG: Kuanshan, Hsieh 1241.

參考文獻

• HSIEH, Chang-Fu and HUANG, Tseng-Chieng, Flora of Taiwan, second edition 4: 661. 1998.  (Fl. Taiwan 2nd edit.)