Nephelium hypoleucum

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Nephelium hypoleucum


Tree, up to 30 m high, dbh up to 1.40 m, or rarely shrub. Leaves 1 -4(-5)-jugate; Inflorescences terminal and in the upper leaf axils; Sepals slightly (to halfway up connate), 1.3-2.6 mm long. Petals either absent or up to 6, spathulate o r not, 1.4-2 mm long, on both sides woolly. Stamens 7-10. Ovary 2- (or 3-) celled. Fruits ellipsoid, 2-3 by 1.5-2.25 cm, rather densely warty, the warts pyramidal or linear, up to 1.5 mm high, acute, glabrous;


Asia-Tropical: Thailand (Thailand present), Burma present, Kraburi present, Peninsular Thailand present
Burma, Indo-China, and Thailand, incl. Peninsular Thailand (Kraburi).


1. The leaves may resemble those of Dimo carpus longan, which, however, have stellate hair sufts, though sometimes minute and only occurring on the lower side of the leaflets on midrib and nerves. Nephelium hypoleucum, on the contrary, has mostly minute appressed hairs on the lower side of the leaflets between the nerves.
2. Vegetatively, the present species also strongly resembles N. melliferum. The main differences are that in N. hypoleucum the leaflets are mostly widest at about ⅓-¼ above the base, and the venation is rather densely reticulate, on the lower surface the veins are prominent and the veinlets almost not; whereas in N. melliferum the leaflets are nearly always widest about halfway, and the venation is densely reticulate, on the lower surface the veins and veinlets both are prominent.
3. Another taxon occurring in the same area and vegetatively resembling N. hypoleucum is N. cus-pidatum var. bassacense. The latter has far more hair' twigs and leaves and the reticulum on the upper side of the leaflets is distinctly more lax.
4. The only other species with leaflets widest only slightly above the base is N. laurinum; for differences see there.


Gagnep. 1950: Fl. Indo-Chine: 968
Craib 1926 – In: Fl. Siam. Enum.: 330
Radlk. 1933 – In: Engl., Pflanzenr. 98: 975
Radlk. 1879: Sapind. Holl.- Ind.: 28