e-Flora of Thailand
Volume 7 > Part 1 > Year 1999 > Page 76 > Apocynaceae > Spirolobium
Spirolobium cambodianum Baill.wfo-0000313531
Bull. Linn. Soc. Paris 1: 773. 1889; Pitard, Fl. Gén. I.-C. 3: 1166. 1933;-Kerr, Fl. Siam. En. 2: 451. 1939; Whitmore, Tree Fl. Mal. 2: 5. 1973; Lý, Fedd. Rep. 97: 619. 1986. Fig. 25; Plate IV: 3.
Accepted Name : This is currently accepted.
Synonyms & Citations :
Description : Small shrub to 2 m. Branchlets sparsely puberulent, more rarely glabrous or densely puberulent. Leaves: mostly elliptic or linear, more rarely ovate or obovate, 2.7–8 x 0.3–3.3 cm, apex acute or acuminate, base cuneate to rounded; petiole, and often midrib, sparsely pubescent. Inflorescence axes pubescent. Sepals 2.5–6.4 mm long, 0.7–1 mm wide at base, narrower for most of length; pubescent, ciliate; often with colleters inside. Corolla white and pale yellow; tube not twisted; 1.7–3.5 cm long widening at 0.6–1.9 cm; sparsely pubescent to glabrous outside, pubescent below stamen insertion inside; lobes 8–15 mm long, apex acuminate or apiculate, sparsely pubescent to almost glabrous. Stamens inserted at point where corolla tube widens; anthers 3.7–4 x 0.6–0.8 mm. Ovary 0.9–1 mm long; style filiform, sparsely pubescent, 6–6.4 mm long. Fruit 8.5–19 cm long, 2.2–3.5 mm in diameter. Seeds 4–9 x 0.8–1.4 mm; flattened; minutely pubescent on one side; coma 12–37 mm long.
Thailand : SOUTH-EASTERN: Chon Buri, Chanthaburi, Trat; PENINSULAR: Surat Thani, Phuket, Krabi, Trang, Satun, Songkhla, Pattani, Narathiwat.
Distribution : Vietnam, Laos, Cambodia (type), Malay Peninsula, Borneo.
Ecology : Open grassy areas, scrub, mangrove thicket or open forests, often on sandy soil, sea level to 300 m alt.
Vernacular : Phetcha hueng (เพชรหึง)(Chanthaburi); phetcha hueng tak kat (เพชรหึงตักกาด)(Trat); hat sakhun (หัสคุณ)(Songkhla).
Notes: This species is particularly variable in leaf shape and size.