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FOC | Family List | FOC Vol. 23 | Arecaceae

18. Pinanga Blume, Bull. Sci. Phys. Nat. Néerlande. 1: 65. 1838.

山槟榔属 shan bin lang shu

Pseudopinanga Burret.

Stems clustered or less often solitary, ringed with prominent leaf scars, tall to short or subterranean. Leaves 5-11, pinnate or occasionally undivided; leaf sheaths closed, forming a prominent, yellowish to reddish green crownshaft (rarely open and not forming crownshafts), usually covered with variously colored scales; pinnae regularly arranged along rachis, spreading in same plane, linear to sigmoid, 1- to several veined, at leaf apex pinnae joined with only a short split at tip, giving pinnae a lobed appearance. Inflorescences branched to 1 order, with a few rachillae, sometimes spicate, borne below crownshaft, rarely among leaves, covered initially with prophyll; rachillae becoming pendulous, seldom remaining erect, usually smooth, sometimes hairy; flowers unisexual, borne throughout in triads of 1 female flower flanked by 2 male flowers, these arranged distichously along rachillae, or less often tristichously or spirally. Fruits red, orange, or black, small, ellipsoid to globose or spindle-shaped, commonly beaked, 1-seeded, ripening through a series of colors, commonly from green to pink to red to black; endosperm ruminate, rarely homogeneous; germination adjacent; eophylls bifid.

About 137 species: Bangladesh, Bhutan, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Papua New Guinea, Thailand, Vietnam; five species (one endemic) in China.

The record in FRPS (13(1): 140. 1991) of Pinanga hexasticha (Kurz) Scheffer is probably based on a misidentification. Pinanga hexasticha is restricted to Myanmar.

1 Inflorescences with 1 rachilla; flower triads and fruits spirally or tristichously arranged along rachilla   (2)
+ Inflorescences with more than 1 rachilla, rarely with 1 rachilla; flower triads and fruits distichously arranged along rachillae   (3)
2 (1) Rachilla triangular in cross section; flowers and fruits tristichously arranged along rachilla.   1 P. gracilis
+ Rachilla rounded in cross section; flowers and fruits spirally arranged along rachilla.   2 P. acuminata
3 (1) Rachillae ca. 30.   3 P. tashiroi
+ Rachillae 1-8   (4)
4 (3) Pinnae 10-28 per side of rachis; rachillae 3-8.   4 P. sylvestris
+ Pinnae 3-6 per side of rachis, or rarely leaf undivided; rachillae 1-4.   5 P. baviensis

Lower Taxa


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