Cinnamomum percoriaceum Kosterm.

15. Cinnamomum percoriaceum Kosterm. View in CoL — Map 5 View Map 5

Cinnamomum percoriaceum Kosterm. (1970b) 58; J.A.R. Anderson (1980) 223. — Type: Illias S 26395 View Materials (holo SAR; iso BO, K, L, SAN, SING ), Borneo , Sarawak, Lawas district .

Small tree to 6 m tall, to 7 cm diam. Twigs stout, angular, c. 3 mm diam, glabrous, drying blackish, discolorous to leaf blade. Terminal buds not perulate, conical, c. 2 mm long, densely covered with straight appressed hairs. Leaves opposite or subopposite, yellowish brown, trinerved, thickly coriaceous, glabrous below; blade not bullate, without domatia, elliptic to ovate, 7–12(–18) by 2.5 –7(–9) cm, base cuneate, slightly attenuating to the pedicel, apex acute; midrib raised on both sides, c. 1 mm broad; lateral veins raised on both sides, extending to the base of acumen; major intercostal veins slender, raised, scalariform to subscalariform, 1–10 mm apart, less prominent than midrib; minor intercostal veins faint, reticulate; petiole stout to slender, flat above, glabrous, c. 1 cm long, c. 1–3 mm diam, blackish, drying discolorous to leaf blade. Inflorescences terminal, stout, paniculate-cymose with up to third order branching, 10– 20 cm long; rachis 2 – 3 mm broad, sparsely appressed hairy. Flowers (at anthesis) appressed hairy; pedicels stout, c. 4 mm long; hypanthium c. 3 mm high; perianth lobes elliptic, c. 3 mm long, appressed hairy on both sides; fertile stamens 2 –3 mm long, anthers ovoid; that of first and second whorl stamens 4-locular, that of third whorl 2-locular, filaments 1/2–2/3 the length of the stamen; glands sessile on each side at the middle of filaments; staminodes c. 1.5 mm long, hastate; ovary globose, 2 mm diam, stigma trilobed. Fruits ellipsoid 5 by 3 mm, cupule cup-shaped, 2 mm high, 3.5 mm diam, rim entire, not undulating, outer wall smooth; perianth lobes caducous; pedicel c. 2 mm long, c. 1 mm broad, glabrous.

Distribution — Endemic to Borneo, known only from Sarawak (Limbang and Sri Aman districts).

Habitat & Ecology — In montane forest; altitudes to 2000 m.

Note — Previously this species was only known from the type locality in Lawas district but here it is also found to occur in Limbang district ( S 26395 View Materials ) and Sri Aman district ( S 45066 View Materials ). Cinnamomum percoriaceum resembles C. sintoc but differs in the lateral veins that extend to the leaf tip (vs extend to 1/2 –2/3 the length of the leaf blade).