生活型

herb

形態特徵

• Small herbs, often woody at the base, 10–20 cm tall, subglabrous.
• Leaves alternate, more or less sessile; blade narrowly lanceolate-elliptic, 1–3 cm long, 2–5 mm wide, the base decurrent into petiole, the apex acute with a mucro, margins subentire or very remotely crenulate; stipules in pairs, hyaline, persistent, triangular to subulate, 1–2 mm long, the tip glandular.
• . Flowers solitary, axillary, zygomorphic, with a pair of bracteoles at the joint of peduncle and pedicel; peduncle 4–20 mm long, 0.7–1 mm wide, apex acuminate, margins entire, without appendage at base, persistent; petals 5, unequal, the posterior pair oblong-lanceolate, 2–3 mm long, ca. 1.2 mm wide, the middle pair lanceolate-falcate, 3–5 mm long, 1–2 mm wide, the anterior one broadly spathulate, 5–13 mm long, 4–10 mm wide; spur 1–2 mm long, densely puberulous on the inner surface; stamens 5, connivent around the gynoecium; filaments free, ca. 0.5 mm long; anthers 2-celled, ca. 1 mm long; the terminal connective appendages ca. 0.6 mm long, membraneous, the anterior two stamens with an elongate, recurved gland at the base; ovary ovoid-globose, unilocular, tricarpellate; style simple, ca. 1.5 mm long, geniculate at base, conspicuously clavate.
• Fruit a 3-valved capsule, subglobose, ca. 4–5 mm in diameter, glabrous, valves leathery, boat-shaped. Seeds ellipsoid, ca. 2 mm long, 1.2 mm wide, longitudinally ribbed.
• Chromosome number n=8 (Peng & Chen, 1986).

分布

• 台灣 : Recently found in Hengchun peninsula, growing on open grassland near the seashore.
• 世界 : Widely in Africa and Madagascar, scattered in India, Sri Lanka, Indochina, S.E. China, the philippines, Borneo, E. Java, New Guinea and Australia.

引證標本

PINGTUNG: Maopitou, Wang 2906, Huang & Huang 13532; Fengchuesha, Huang K043.

參考文獻

• WANG, JENN-CHE and HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 3: 805. 1993.  (Fl. Taiwan 2nd edit.)