Monographs Details: Kotchubaea micrantha Steyerm.
Authority: Maguire, Bassett & Wurdack, John J. 1964. The botany of the Guayana Highland--Part V. Mem. New York Bot. Gard. 10: 1-278.
Family:Rubiaceae
Description:Latin Diagnosis - Arbor dioica, ramulis glabris; stipulis persistentibus ovatis apice anguste obtusis 5-9 mm longis subglabris vel extus puberulentibus marginibus ciliolatis; foliis adultis glabris petiolatis vel superioribus subsessilibus, petiolis 2-5 mm longis glabris; laminis coriaceis late obovatis vel oblongo-obovatis apice rotundatis vel subacutis basi obtusis vel subacutis 8-14 cm longis 4-9 cm latis glabris, nervis lateralibus utroque latere 5-7 supra tenuissime impressis subtus subprominentibus; floribus masculis cymis pedunculatis, pedunculo 1.5-5 cm longo glabro, irregulariter 6-13-floris dispositis, pedicellis 2-5 mm longis puberulentibus; pedunculis prominentibus 1.5-5 cm longis angulatis glabris; calyce masculo cylindrico-tubuloso 7-9.5 mm longo 3.5-4.5 mm diam extus puberulent intus dense villoso basi glabro 7 mm excepto, apice 7-denticulato dentibus late deltoideis subobtusis vel acutis 0.5 mm longis; corolla mascula alba hypocrateriformi tubo 22-28 mm longo 3-3.5 mm lato, superne paullo ampliato fauce 5 mm diam, 6-7 mm longo; tubo extus dense cano-sericeo intus dense sericeo, lobis 7 linearilanceolatis subfalcatis attenuatis apice subacutis 15-20 mm longis 1.5-3.5 mm latis utrinque canotomentellis; staminibus 7, antheris lineari-oblongis 5-5.5 mm longis apice acumine late lanceolato acuto 0.5 mm longo basi obtuso; floribus femineis non visis; bacca non visa.

Distribution and Ecology - Distribution: southwestern Venezuela and adjacent Colombia. VENEZUELA. Territorio Federal Amazonas: en los margenes del Alto Rio Atacavi; arbolito con flores blancas; bastante comun; los troncos durante la estaeion Uuviosa sumergidos en el agua negra; 7 Sep 1960, E. Foldats 3758 (holotype VEN, isotype NY). COLOMBIA. Amazonas-Vaupes: Rio Apaporis, Jino-Goje, entre los rios Paraparana y Popeyaka; alt. 250 m ; arbol 15 m ; flores blancas muy aromaticas; hojas verde claro; 3-11 Sep 1952, H. Garcia Barriga 14342 (paratype US).

Discussion:

This species is distinguished by the elongate peduncle of the staminate inflorescence and by the small corollas. It is noteworthy also for the broadly rounded apex of the leaf-blades and the densely villous interior of the upper two-thirds of the corolla-tube.