Monographs Details: Brachyotum lymphatum Wurdack
Authority: Wurdack, John J. 1953. A revision of the genus Brachyotum (Tibouchineae-Melastomataceae). Mem. New York Bot. Gard. 8 (4): 343-407.
Family:Melastomataceae
Description:Latin Diagnosis - Trichomata laevia. Famuli novelli obscure quadrangulati dense hirsutuli pilis gracilibus ad 1 mm. longis. Petiolus 1-4 mm. Lamina 7-14 x 4-10 mm. ovata vel elliptico-ovata apice late acuta basi obtusa vel truncata, nervis primariis 3 supra impressis subtus expressis, secundariis supra invisus subtus leviter angusteque expressis; supra modice brevi-strigosa, pilis 3-5/mm.2 et ad 1.5 x 0.25 mm. parte basali 2/5-1/2 adhaerente; subtus modice hirsutula, pilis 5-10/mm.2 et ad 1 mm. longis, glandulis solitariis 10-15/mm.2 Flores 5~meri saepe conferto-terni dichasio ab foliis subtento. Pedicellus sub bracteolis 3"5 mm., super 2-4 mm.; bracteolae 3-5 x 1-2 mm. obovato-ellipticae trinerviae supra glabrae subtus sparse laxo-strigulosae, usque ad anthesim persistentes. Hypanthium 3-4 x 4.5 mm., medio 0.2 mm. crassum, modice laxo-longo-strigulosum 7-10/mm.2 Sepala 2.5-5 x 3"4 mm. triangularia vel oblongo-ovata apice late acuta basi per 0.8-1 mm. cohaerentia, sinu late acuto. Petala purpurea 9.5-13.5 x 8-11 mm. obovata et leviter asymmetrica apice rotunda vel leviter obliqua, ciliis non-glandulosis 0.1-0.3 mm. Filamenta 3-5.5 mm.; antherae 2.5-3.5 mm., poro 0.6-0.8 mm. diam.; connectivum basi antherae 1-1.6 mm., ab anthera per 0.7-1.2 mm. liberum, lobis ventralibus 0.7-1 mm. longis singulis 0.5-0.7 mm. latis. Stylus 15-21 x 0.5-0.6 mm., per 6-8 mm. exsertus. Ovarium 3.5-4.5 x 2.5-3.5 mm. apice per 1.5-2 mm. sparse strigulosum, lobis apicalibus super loculos 0.4-0.5 mm.

Distribution and Ecology - Distribution: Dept. Cauca, Colombia, alt. 3300-3600 m. Between "Perro Muerto y la Laguna del Paez," Cuatrecasas 19034 (F).

Discussion:

Type Collection and Locality: Lehmann 6025 (HOLOTYPE K); Colombia, Dept. Cauca, "Paramo de Guanacas, Central Andes of Popayan, alt. 3300-3600 m."

Type Photograph: Gleason 28-3 (destroyed isotype at B).

The small large-pored anthers of B. lymphatum suggest a general affinity with B. markgrafii and its relatives. The leaf pubescence, sepal shape, and eglandular petal cilia are ample distinctions from these Peruvian species. The Berlin isotype had been determined by Cogniauxas B, trianaei. In aspect, B. lymphatum is quite like several of the Colombian species of Chaetolepis and probably will be found in some herbaria misidentified under that genus.