Cinnamomum sublanuginosum Kosterm.
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publication ID |
https://doi.org/10.3767/000651911X615168 |
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persistent identifier |
https://treatment.plazi.org/id/03FA87C9-A232-EE13-B16A-FCB3FB9DE8CF |
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treatment provided by |
Felipe |
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scientific name |
Cinnamomum sublanuginosum Kosterm. |
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24. Cinnamomum sublanuginosum Kosterm. View in CoL — Map 9 View Map 9
Cinnamomum sublanuginosum Kosterm. (1970b) 73; Beaman et al. (2001) 400. — Type: Chew & Corner RSNB 7036 (holo SING;iso K,L, SAN,SAR ), Sabah, Ranau district, Mesilau .
Cinnamomum woodii Kosterm. (1988) 454; Beaman et al. (2001) 401, syn. nov. — Type: Wood SAN 16377 (holo L; iso BO, KEP,SAN,SING ), Sabah, Ranau district, Bundu Tuhan.
Tree 20– 35 m tall, 30– 50 cm diam. Bark brownish; inner bark reddish brown to yellowish; sapwood whitish. Twigs stout, terete, 3 –4 mm diam, distinctly quadrangular apically. Terminal buds not perulate, conical to ellipsoid, up to 1 cm, conspicuously covered by coriaceous elliptic scales (see note 1), to 1 by 0.5 cm, scales densely covered with curly hairs. Leaves subopposite, trinerved, coriaceous, below, initially covered with curly hairs then glabrescent below, remnant of curly hairs always present at midrib below; blade not bullate, without domatia, ovate, oblong ovate, elliptic or lanceolate, (7–)9–16 by (3–) 4– 6 cm, base cuneate, apex acute; midrib raised on both sides, to 1 mm broad; lateral veins raised on both sides, extending to leaf tip; major intercostal veins slender, raised, subscalariform, 2 –5 mm apart, less prominent than midrib; minor intercostal veins faint, reticulate; petiole stout, flat above, initially hairy then glabrescent, 0.5 –1 cm long, c. 2 mm diam. Inflorescences axillary and/or subterminal, stout, paniculate-cymose with second or third order branching, 10–17 cm long; rachis 1–2 mm broad, brownish hairy. Flowers drying brownish hairy; pedicels slender, 2– 3 mm long; hypanthium 2 mm high, distinct; perianth lobes elliptic, c. 2 mm long, appressed hairy on both sides; fertile stamens c. 2.5 mm long, anthers 4-locular, ovoid with truncate tip, filaments 1/4–3/4 the length of the stamen; glands sessile on each side at the middle of filaments; staminodes c. 2 mm long, sagittate; ovary subglobose, c. 1 mm across, stigma peltate. Infructescences to 19 cm long; rachis c. 2 mm broad, densely hairy. Fruits ellipsoid with pointed tip, c. 10 by 5 mm; cupule cup-shaped, c. 4 mm high, c. 5 mm diam, rim entire, not undulating, glabrous; perianth lobes caducous; pedicel stout, 1.5 – 2 mm long, hairy, glabrescent.
Distribution — Endemic to Borneo, known only in Sabah (Ranau district).
Habitat & Ecology — In submontane to montane forest, at altitudes above 1200 m.
Notes — 1. The vegetative bud of C. sublanuginosum is covered by leafy bracts which fall off as the shoot flushes and matures but unlike the perulate bud in temperate Cinnamomum or C. porrectum the bract is not dehiscent and scaly.
2. Cinnamomum sublanuginosum and C. woodii are similar in having curly hairs on the leaf blade, major intercostal veins subscalariform and lateral veins extending to the leaf tip. Their inflorescences are hairy and the fruit cupule has a smooth rim.
3. This species is reminiscent of C. subavenium but differs by its large leaf size (vs small), prominent major intercostal veins (vs faint) and thick cupule (vs flattish).A specimen from Sabah ( SAN 17011) annotated by Kostermans (1970b) as C. sublanuginosum belongs to C. subavenium .
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