Volume 8 > Part 1 > Year 2005 > Page 92 > Euphorbiaceae > Aporosa

9. Aporosa microstachya (Tul.) Müll.Arg.wfo-0000249234

in DC., Prodr. 15(2): 474. 1866.; Hook.f., Fl. Brit. Ind. 5: 349. 1887; Airy Shaw, Kew Bull. 23: 2. 1969, excl. A. maingayi; Kew Bull. 26: 217. 1972; Whitmore, Tree Fl. Malaya 2: 61. 1973.— Scepa microstachya Tul., Annal. Sci. Nat. Ser. 3, 15: 256. 1851.

Accepted Name : This is currently accepted.

Synonyms & Citations :

Description : Shrub to tree, up to 11 m high, (sparsely) tomentose. Stipules ovate, 3–4 by 1–1.5 mm, caducous. Leaves: petiole 6–8 mm long, reniform, tomentose, pulvini rather distinct; blade ovate (to elliptic), 6–12 by 2–3.5 cm, length/width ratio 3–3.4, papery, drying bluish, greyish green above, blackening, brownish below, base cuneate, basal glands absent, margin lowly undulate to crenulate, marginal glands regular, small, blackish grey; apex cuspidate to caudate, lower surface puberulous, glabrescent, disc-like glands few, at margin; venation prominent on both sides, nerves in 5–7 pairs. Inflorescences axillary. Staminate inflorescences 2–5 together, 6–14 mm long, sparsely puberulous, peduncle 0–0.5 mm long; bracts inconspicuous; glomerules mostly indistinct, 7–10 densely set flowers, continuously spaced along rachis. Staminate flowers 0.4–0.6 mm long, sessile, red to purple; sepals 4, obovate, 0.3–0.5 mm long, puberulous; stamens 2, slightly exserted, 0.4–0.6 mm long; anthers 0.1–0.2 mm long; pistillode absent. Pistillate inflorescences 1–3 together, 2–5 mm long, puberulous; flowers up to 5, often densely set along rachis (to laxly at base); bracts triangular, 0.4–0.6 mm long. Pistillate flowers 1.5–2.5 mm long, (sub)sessile; sepals 4, ovate, patent, 0.5–0.7 mm long; ovary 2-locular, puberulous; stigmas 1.5–2.5 mm long, bifid to near base. Fruits (narrowly) ovoid, not stiped, slightly beaked, 9–12 by 5–6.5 mm, green tinged red to yellow to brown, drying dark brown to black, sparsely hairy, not fleshy; septae and column glabrous. Seeds 6–7.5 by 4.5–5 by 2.5–3.5 mm.

Thailand : SOUTH-WESTERN: Kanchanaburi; PENINSULAR: Ranong, Surat Thani, Phangnga, Krabi, Nakhon Si Thammarat, Trang, Satun, Pattani.

Distribution : Burma (type), Malay Peninsula.

Ecology : Disturbed or primary evergreen forests, on shale, granitic or limestone bedrock, 10–480 m alt.

Vernacular : Krim khao (กริมเขา)(Ranong); a-noh-pha-ko (อะเนาะพาก้อ)(Malay-Pattani); tan dam (ตานดำ)(Peninsular).

Notes: See note under Aporosa duthieana.