Monographs Details: Microlicia guanayana Wurdack
Authority: Maguire, Bassett & Wurdack, John J. 1958. The botany of the Guayana Highland--Part III. Mem. New York Bot. Gard. 10: 1-156.
Family:Melastomataceae
Description:Latin Diagnosis - A congeneribus brasiliensibus differt forma, foliorum. Fructiculus erectus, ramis superne satis ramosis modice incurvo-puberulis pilis non glandulosis. Folia internodiis longiora; lamina 6- X 1-2-1.5 mm, oblanceolata basi attenuata apice hebetiacuta et in seta 0.5-1 mm longa terminata, supra modice laxeque strigulosa, subtus dense strigulosa, marginibus setosociliatis ciliis ad 1 mm longis, uninervia i.s. flavida tenuis sed rigidiuscula supra et subtus dense impresso-punctata. Flores breviter (0.5-1.5 mm) pedicellati; hypanthium ad torum 3 mm longum modice granuloso-glandulosum breviter subsparseque eglanduloso-puberulum setis intercalycinis paulo grandioribus; calycis tubus 0.3 mm longus, lobis 3 X 1 mm anguste triangularibus extus sparse puberulis apiee anguste acutis et in seta 1-1.5 mm longa terminatis. Petala 10-10.5 X 4.5 mm, anguste obovata obtusa minute apiculata in seta brevi terminata. Stamina maiora: filamenta 5 mm longa; antherae 2 mm longae; connectivum sub anthera ad insertionem filamenti 3.2 mm longum, in appendicem 1.7 X 0.6 mm productum. Stamina minora: filamenta 4.5 mm longa; antherae 1.7 mm longae; connectivum sub anthera ad insertionem filamenti 1.4 mm longum, in appendicem hebetem 0.4 X 0.3 mm productum. Ovarium stylusque ut in genero.

Discussion:

Type: diffuse shrub, flowers pink, frequent on summit of Cerro Guanay, Cano Guaviarito, Rio Manapiare, Rio Ventuari, Terr. Amazonas, Venezuela, elev. 1800 m, Feb 2, 1951, Bassett Maguire, Kathleen D. Phelps, Charles B. Hitchcock & Gerald Budowski 31727 (NY).

In Cogniaux' arrangement of Microlicia, M. guanayana would key to the pubescent group of species with punctate one-nerved leaves, centering around M. cuneata Naud., M. acuminata Cogn., M. hirsutissima Naud., M. rcgeliana Cogn., and M. alb ida Pilger. The relatively much narrower bluntly acute leaves distinguish the Guanay species from these Brazilian congeners. Actually, M. guanayana would probably be better regarded as a pubescent near relative of M. benthamiana.