Type. Shrub to 3 m, flowers creamy white, locally frequent in wet forest, Merume Mountain, Partang River, upper Mazaruni River basin, alt. 1140 m, 1 Jul 1960, Stephen S. Tillett, Carolyn L. Tillett, & Rufas Boyan 43919 (holotype
C. cymifera has leaf blades only 5-12 cm long, slender cyme branches only 0.5 mm diam at most, and a 1/3 superior ovary; the stems, lower leaf surface veins, inflorescence, and hypanthium are stellulate-furfuraceous. Otherwise, the Guatemalan species is quite similar in qualitative floral details. C. ampla Cogn. (which is very similar to, if not synonymous with C. grandifolia Cogn.) is more distantly related; the young stems and petioles are densely lax-strigulose with roughened hairs, the bracts are setulose-ciliolate, the flowers are much smaller, and the well-developed ovarian collar is apically setulose. I do not know if the nodal swellings of C. pakaraimae are genetic or pathologic—the occasional unilateral development suggests the latter. Certainly these inflations differ in appearance from the cauline formicaria of C. tococoidea (DC.) Gleason.
C. pakaraimae does not suggest any affinity with C. coriacea (Naud.) Cogn. and its close relative, C. duidae Gleason; both of these cumbre species have terminal inflorescences and probably should be transferred to Miconia, perhaps among the 4-merous species of Sect. Octomeris. I have continued to use the later homonym, C. coriacea (Naud.) Cogn. (1888), in identifications until the best generic disposition can be found; the name is antedated by C. coriacea Naud. (1852) which is Ossaea coriacea (Naud.) Tr. From the minute morphologic similarities, I also feel that Leandra linearis Gleas. (known only in fruit) is a close relative of the two anomalous species of Clidemia and should share their eventual generic fate.