Monographs Details: Ouratea pseudotatei Maguire & Steyerm.
Authority: Maguire, Bassett. 1989. The Botany of the Guayana Highland- Part XIII. Mem. New York Bot. Gard. XIII: 1-127.
Family:Ochnaceae
Description:Species Description - Arbuscula, foliis coriaceis elliptico- vel ovatooblongis apice acutis basi rotundatis vel obtusis 12.5-18 c m longis (4-)6-6.7 c m latis, marginibus obscure crenulatis, dentibus obtusis 5-6 per cm, supra nitidis nervis lateralibus primariis intermediisque conspicue impressis, venulis tertiariis aliquantum inegularibus subalveolatis, subtus inter nervos leviter impressis aliquantum granulosis; petiolis 5-15 m m longis; inflorescentia paniculata multiramosa 17-18 c m longa 9-15 cm lata, axibus 4-10 late patentibus inferioribus medianisque 4-8.5(-18) c m longis; floribus 2-3- fasciculatis vel supeme solitariis; pedicellis 5- 6(-12) m m longis; alabastro ovoideo subacuto 6-6.5 m m longo; sepalis oblongo- vel ovato-lanceolatis obtusis 7.5-8 m m longis 3.5-4 m m latis; petalis late obovatis apice rotundatis breviter unguiculatis 8 m m longis 6.5 m m latis; antheris 7 m m longis valde rugulosis; gynophoro sub anthesi ovario breviore.

Distribution and Ecology - K n o w n only from Guyana

Discussion:

Type. Guyana. Arabaru River (Kako tributary), upper Mazamni drainage, Jan 1939, A. S. Pinkus 277 (holotype NY)

Specimens examined. GUYANA, Manawarin River, Feb 1883, Jenman 1931 (NY); Pinkus 277, type, cited above; basin of Essequibo River, nr. mouth of Onoro Creek, 1°35'N, 1937, A. C. Smith 2730 (NY); 2nd hiU behind Mission, 24 Sep 1952, Forest Dept. Field No. G237 (NY).

This species resembles O. tatei but diflfers from it in having the leaf margins obscurely crenulate and a more conspicuously nerved, shining upper leaf surface.