生活型

herb

形態特徵

• Herbs, to 60 cm tall, covered with septate hairs; stems square, decumbent or ascending from base, puberulent, angles obtuse, minutely hairy.
• Leaves cauline, petiolate; petioles slender, to 10 cm long, minutely hairy; blades hastate, 3–8 cm long, 2–4 cm wide, base with triangular lobes, apex acute to acuminate, margins serrate-dentate, upper surface minutely hairy, lower surface glabrous or minutely hairy on veinlets, glandular dotted.
• Flowers in verticillate cymes forming loose terminal racemes, to 15 cm long; bracteoles ovate, 5–10 mm long; pedicels minutely hairy, 4–6 mm long; calyx tubular-campanulate, minutely hairy, bilabiate, 7–8 mm long, upper lip entire, acute, lower lip 2-toothed, teeth narrowly triangular, 1.5–2 mm long; corolla yellow, campanulate, bilabiate, glandular dotted, with a ring of hairs inside near base of tube, 2–3.5 cm long, upper lip oblong, bilobed, 4–6 mm long, lower lip 3-lobed, central lobe very broadly ovate, 2–4 mm long, 5–6 mm wide, 2 lateral lobes broadly ovate, 2 mm wide; stamens 2, inserted on inside of corolla tube, filaments 4–5 mm long, connective with upper arm 5–6 mm long, lower arm ca. 3 mm long.
• Nutlets obovoid-orbicular, obtusely 3-angled, slightly flattened, smooth, ca. 2 mm long.

分布

• 台灣 : in lowlands in the northwestern part of the island.

引證標本

TAIPEI: Sehting, Tin & Kao 4960; Sitiseigun, Murakami 179. ILAN: Soulanshan, Chuang & Kao 7079; Taipingshan, Chuang et al. 4633. HSINCHU: Kuanwu, Huang 4174*.

參考文獻

• HUANG, Tseng-Chieng, HSIEH, Tsung-Hsin and CHENG, Wu-Tsang, Flora of Taiwan, second edition 4: 523. 1998.  (Fl. Taiwan 2nd edit.)