Buchenavia guianensis

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Buchenavia guianensis


Tree 3-35(-?45) m, with short or no buttresses. Leaves coriaceous, oblanceolate to narrowly obovate-oblong, (6-)13-40(-?50) x (2-)4-9.5 cm, apex long- or short-acuminate or cuspidate to apiculate, base narrowly cuneate and often decurrent, glabrous to very sparsely pubescent at maturity or sometimes more pubescent on major veins particularly below and on margin; domatia absent; venation eucamptodromous, midvein stout, very prominent, secondary veins 8-20 pairs, moderately spaced to distant, arising at moderately to widely acute angles, curved or slightly so or only near base, prominent, intersecondary veins sometimes present, tertiary veins rather weakly percurrent; higher order venation distinct; areolation imperfect to well developed, usually prominent; petiole (0.5-)2-7 cm long, glabrous, usually eglandular. Inflorescence 7-16 cm long, spicate; peduncle 2-3 cm, pubescent, becoming glabrous in fruit; rhachis 5-13 cm, pubescent. Flowers 3-5 mm long; lower hypanthium 2-3.5 mm long, subglabrous to densely pubescent, rather gradually narrowed to neck more than half the total length; upper hypanthium 1-1.5 x 2.5-3.3 mm, glabrous. Fruit glabrous, dull and with rough rufous scurfy surface, 3-6.5 x 1.3-4 cm, oblong to oblong-elliptic in side view, subterete or 6-angled with 3 angles stronger than alternating 3, not or scarcely succulent, apex rounded to subacute or shortly apiculate, base rounded to obtuse and without pseudostipe.


French Guiana present present, Southern America: Brazil North (Amapá present, Amazonas present, Pará present, Rondônia present)
French Guiana and Brazil (Amapá, Pará, Amazonas, Rondônia); apart from the type only 3 specimens have been seen from French Guiana (FG: 4).


Flowering ; fruiting .


Buchenavia guianensis is a most distinctive species in fruit, the scurfy non-succulent fruits are unique in the genus. The leaves, which dry a characteristic olive-green colour, also differ in several respects (thickness, colour, venation) from those of the other large-leaved sympatric species, B. macrophylla, B. reticulata and B. megalophylla, which are all species of inundated forest.