Volume 9 > Part 3 > Year 2008 > Page 197 > Fagaceae > Castanopsis

7. Castanopsis cerebrina (Hickel & A.Camus) Barnettwfo-0000813079

Quer. Rel. Fag. Asia: 405. 1940; Trans. & Proc. Bot. Soc. Edinburgh 34: 183. 1944.— Pasania cerebrina Hickel & A.Camus, Ann. Nat. Bot. 3: 408. 1921; Fl. Indo-Chine 5: 1004. 1930.— Lithocarpus cerebinus (Hickel & A.Camus) A.Camus, Rev. Bot. Appl. Agric. Trop.: 25. 1935. Fig. 10; Plate XIX.

Accepted Name : This is currently accepted.

Description : Tree, 10–20 m high, 40–100 cm girth. Terminal buds ovoid, 4–5 by 2–3 mm. Twigs at first ferruginous, then glabrescent, tetra-to pentangulate, lenticellate. Bark grey, shallowly fissured; inner bark ca 2 cm thick, yellow with white stripes. Stipules narrowly lanceolate, 4 5 by 1.5–2 mm, glabrous. Leaves oblanceolate, 13–29 by 4–11 cm; base cuneate; apex acute, broadly acute to obtuse; margins serrate; coriaceous, glabrous, glossy green on the upper surface and greenish to glaucous on the lower; midrib prominent on the lower surface and slightly depressed on the upper, pubescent then glabrescent; lateral nerves 14–17 pairs, narrowly ridged on the lower surface and subdepressed on the upper, glabrous, scalariform veins conspicuous on both surfaces. Petiole 1.5–2.3 cm long, flattened adaxially, glabrous. Inflorescences male and female separate or mixed. Male inflorescence always branched, terminal or axillary, spikelets 7–15 cm long. Male flowers yellowish-cream, scented, in 1–8–10 flowered cluster; bracts ovate, glabrous; calyx 6-lobed, lobes free, ca 1 by 0.5 mm, glabrous; stamens (10)–12, 1–1.5 mm long, glabrous; rudimentary ovary ca 1 mm in diam. Female inflorescence spike, axillary, 8–12 cm long, pubescent, other characters as in male flowers; styles 3; stigmata erect to divergent. Fruits obconical, 1.5–3.2 by 1–3 cm (including cupule), on erect infructescence 15–20 cm long, fruit-stalk 0.5–1 cm. Cupule enclosing up to ¾ of the nut (when young completely enclosed except around the umbo); wall with thin imbricate scales or lamellae, the latter truncate and fused with the wall or curved inwards. Nut 1 per cupule, ovoid, conical 1.5–2.3 by 1–1.8 cm, glossy brown; scar flattened, ca 8 mm in diam.

Thailand : NORTHERN: Mae Hong Son, Chiang Mai, Chiang Rai, Lampang.

Distribution : Vietnam (type).

Ecology : On ridges in evergreen rain forests, lower montane rain forests, mixed deciduous forests, 900–1,800 m (most commonly 900–1,500 m). Flowering: March–June (most commonly March–April); fruiting: March–December (most commonly March–April).

Vernacular : Ko ta mu (ก่อตาหมู)(Northern).