生活型

herb

形態特徵

• Annual, caulescent. Stem 6–35(–55) cm long, unbranched, glabrous or with a few hairs.
• Leaves opposite; petiole 0.2–4 cm long; leaf blade narrowly ovate or elliptic, 3–13 cm long, 1.5–7.5 cm wide, thin herbaceous, adaxially sparsely pubescent, abaxially sparsely pubescent on veins, base oblique, rounded, nearly cordate, or broadly cuneate, margins denticulate, apex acute; lateral veins 6–10 pairs.
• Cymes 1–3-flowered; peduncle 2.5–4.5 cm long, glabrous or sparsely pubescent; bracts 2, ovate, 5–8 mm long, ciliate, margin entire, apex acute. Pedicel 0.5–1.8 cm long, glabrous or sparsely pubescent. Calyx campanulate, (0.6-)1.2–1.7 cm long, 5-lobed nearly to middle, glabrous, lobes triangular, 5–7.5 mm long, margin entire, apex cuspidate. Corolla white or purplish, (2.3-) 3.4–5.8 cm long, sparsely puberulous outside, glabrous inside, tube nearly tubular, 2.5–3.6 cm long, upper lip 7–10 mm long, lower lip 12–15 mm long. Filaments lanceolate-linear, 10–12 mm long, bent, sparsely puberulous; anthers ca. 2 mm long, glabrous; staminodes 2 or 3, 3–5 mm long. Gynoecium 2.4–2.8 cm long, with a few hairs; anterior stigma obtrapezoid, ca. 3.5 mm long, 2-lobed.
• Capsule linear, 7.5–12 cm long, 1.6 mm wide, glabrous. Seeds fusiform, ca. 0.3 mm long.

物候

Flowering July to October, fruiting September to November.

分布

• 台灣 : southern and central regions; on rocks in forested valleys and streamsides, from 300 to 700 m.
• 世界 : northern Myanmar, northern Thailand, Laos, northern Vietnam, southern China.

引證標本

NANTOU: Hsinsheng, Saito s. n. 1926; Jwushan to Tayjyishyaguu, Lu, s. n. 1985. CHIAYI: Neipu to Chishinliao, Yen 3036; Kuangying waterfall, Ying s. n. 1991. KAOHSIUNG: Liukuei, Yamamoto & Mori 770; Shanping, Chang 2071; Maolin, Wang et al. 588; Weiliaoshan, Huang 49. PINGTUNG: Wutai to Santimen, Hosokawa 5462; Ilashe, Suzuki 11310; Litingshan, Huang et al. 16150. TAITUNG: Chippongoe, Sasaki s. n. 1934.

參考文獻

• LI, Zhen-Yu and KAO, Muh-Tsuen, Flora of Taiwan, second edition 4: 691. 1998.  (Fl. Taiwan 2nd edit.)