Type. Small or medium-sized tree with spreading or umbrella-shaped crown, trunk round, straight, flowers creamy yellow, small, in dense trophilous forest on slopes, Parque Nacional Aragua, Venezuela, 540 m, Llewelyn Williams 10270 (holotype, fl.F).
Although the Steyermark material shows larger leaves, the fruit is typically that of O. glandulosa. Flowering specimens from Chimanta may show that this is indeed a separate though related taxon.
The species appears to be associated with the "glomerata" complex, but is easily distinguished from the latter by the presence of hermaphrodite flowers, by the more loosely reticulate leaves, by the more dense and more persistent ferruginous-tomentose pubescence of the young branchlets, and particularly by the fruits which in 0. glandulosa are ellipsoid, almost wholly exserted, seated in a shallow, subpateriform-campanulate, verruculose cupule subtended by a thickened pedicel. The fruit of O. glomerata, on the other hand, is oblong or ellipsoid, not more than 10 mm long and (4-) 5 mm broad, and snugly enclosed one-third to one-half their length in a suburceolate, cyathiform, short-stipitate cupule subtended by a comparatively slender pedicel.