Nephelium laurinum

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Nephelium laurinum


Tree, up to 24 m high, dbh up to 90 cm. Leaves 1-6-jugate; Inflorescences mostly terminal, sometimes pseudoterminal, the lower branches axillary. Sepals up to c. 20% connate, 2-3 mm long. Petals 0-5, (obovate-)lanceolate, 1.6-2.3 mm long, at least the lower half woolly-ciliate. Stamens (7 or) 8. Ovary 2 (-4)-celled. Fruits more often with two carpels developing than in most species, slightly curved obovoid (especially when young) to ellipsoid, c. 2.5 by 1.5 by 1.25 cm, finally glabrous, fairly sparsely set with 2-3 (-8) mm long triangular appendages with short, curved, tongue-shaped apical part;


Asia-Tropical: Borneo present; Malaya (Peninsular Malaysia present); Sumatera (Sumatera present), W Kalimantan, near Mt Klam present, West Java present
Malesia: Sumatra, Malay Peninsula, and Borneo (W Kalimantan, near Mt Klam, one collection). Blume (1847) mentions also West Java, but no material nor any later record from that area is known (see also Koorders & Valeton, l.e.).


1. As the greatest width of the leaflets is often only slightly above the base, this species may resemble N. hypoleucum. However, the latter differs in the broader leaflets with an obtuse to rounded apex and with nerves prominent beneath; the leaflets of N. laurinum are mostly caudate-acuminate and the nerves are only slightly raised beneath.
2. This species is well characterized by the ± parallel-sided, long-acuminate leaflets and the fruit lobes both of which relatively often start developing. The leaflets of N. subfalcatum are of the same shape, but the venation is lax and elongated parallel to the nerves, whereas in N. laurinum it is densely, regularly, and finely reticulate.


Leenh. 1986 – In: Blumea: 404
Radlk. 1933 – In: Engl., Pflanzenr. 98: 974
Corner 1952: Wayside Trees, ed. 2: 593
Hiern 1978 – In: Gard. Bull. Sing.: 153
Ridley 1922 – In: Fl. Malay Penins.: 500
Koord. & Valeton 1903 – In: Bijdr. Booms. Java: 191
Radlk. 1933 – In: Engl., Pflanzenr. 98: 974
Backer & Bakh. f. 1965 – In: Fl. Java: 138
H. Keng 1982 – In: Gard. Bull. Sing.: 91
Radlk. 1933 – In: Engl., Pflanzenr. 98: 981