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Classification
Calamus poilanei Conrard
Nomenclature
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Genus: Calamus
SUMMARY
Robust single-stemmed rattan. Stem climbing to 150 m long, but usually much less because of over-harvesting, without sheaths 3–5 cm diam., with sheaths 4–7.5 cm diam., internodes c. 35 cm long, longer in juvenile stems. Leaves ecirrate, massive; sheaths bright green, sometimes with scattered dark brown indumentum, armed with scattered, solitary or occasionally paired, reflexed broad triangular green spines 1.5–3.5 cm long, with black tips and slightly swollen bases, spines sometimes very sparse or lacking altogether; ocrea inconspicuous, very short, tattering, bearing scattered black caducous indumentum; knee prominent, generally unarmed; flagellum massive, often exceeding 7 m long; petiole to 60 cm long, c. 2.5 cm wide, armed with scattered groups of broad trianglar spines to 1.5 x 0.4 cm; rachis to 2.25 m, somewhat curved, bearing c. 40, regularly arranged leaflets on each side of the rachis, the longest to 55 x 3 cm, armed with scattered short black spines along the margins and two lateral nerves on upper surface. Inflorescences 2–6 m or more long with a terminal flagellum and numerous (10 or more) widely spaced partial inflorescnces, the male branched to 3 orders the female to 2; male rachillae 3 x 0.4 cm, female rachillae 11–20 x 0.4 cm. Mature fruit ovoid, 2.0 x 1.4 cm, covered in c. 20 rows of pale straw-coloured spines with darker margins. Seed ellipsoid with flattened side, c. 1.2 x 0.8 cm; endosperm homogeneous.