生活型

herb

形態特徵

• Annual herbs. Stem erect, purplish, glabrous, angular, 3–12 cm tall.
• Basal leaves short-petiolate, spatulate, 3–8 mm long, 2–4 mm wide, apex obtuse. Stem leaves sessile, ovate to lanceolate, 5–10 mm long, 2–5 mm wide, base cuneate, apex acute, margin finely denticulate, midveins distinct beneath.
• Cymes lax, terminal and axillary. Flowers 4 or 5-merous. Pedicel spreading to erect, 5–30 mm long, angular, glabrous. Calyx tube 0.6–1 mm long; lobes lanceolate to narrow-lanceolate, 6–9 mm long, 1.5–2.5 mm wide, apex acute or acuminate. Corolla slightly bluish white, tube 0.8–1.2 mm long; lobes ovate, 7–9 mm long, apex acuminate. Nectaries 2, at base of each corolla lobe, the rim prolonged into a tube, with filamentous appendages usually absent, few when present; appendages ca 0.5 mm long. Stamens inserted at summit of corolla tube; filaments curved outward in fresh flowers, 3–4 mm long; anthers blue, ellipsoid, ca. 1 mm long. Ovary elliptic-oblong, 5–6 mm long, ca. 1.5 mm wide, apex triangular acute; stigma lobes triangular, decurrent on apical part of ovary.
• Capsules cylindric, as long as persistent corolla, 8–10 mm long, 2.5–3.5 mm wide, dehiscent by two valves at apex. Seeds dark brown, smooth, subglobose, 0.6–0.8 mm in diam.

物候

Flowering Aug-Oct, fruiting Sep-Nov.

分布

• 台灣 : so far known only from one population on moist gravelly slopes and cliff faces of Mt. Chilaishan of Taroko National Park, ca. 3,100-3,300 m alt. Very rare.

引證標本

HUALIEN HSIEN: Hsiulin Hsiang, Taroko National Park, on the way from Cheng-kung-pao No. 2 to peak of Chilaishan, 3,150– 3,350 m alt., 3 Oct 1998, Chen 2609 (TNU); Taroko National Park, the saddle between Chilaishan and Chilaipeifeng, ca. 2 km SW of Chilaipeifeng, 3,200–3,300 m alt., 2 Sep 1999, Wang et al. 11177 (TNU).

引用文獻

• Chen & Wang., Botanical bulletin of Academia Sinica 41: 323-326. 2007.  (Bot. Bull. Acad. Sin., 中央硏究院植物學彙刊)