1953] 



REVISION OF BRACHYOTUM 



395 



sae, minime usque ad anthesim persistences. Hypanthium 4 x 5.5 mm., medio 0.3 

 mm. crassum, modice gracili-strigosum 8-9/mm. 2 Sepala 4.5 x 3"3.5 mm. oblonga 

 apice late acuta vel anguste obtusa basi per 0.5 mm. cohaerentia, sinu acuto. 

 Petala purpurea 11-12 x 9 mm. asymmetrice obovata apice rotunda, ciliis glandu- 

 losis 0.1-0.4 mm. (terminali ad 1 mm.). Filamenta 3«5"4 mm.; antherae 3"3«5 mm., 

 poro 0.5-0.6 mm. diam.; connectivum basi antherae 1.5*2 mm., ab anthera per 1- 

 1.5 mm. liberum, lobis ventralibus 1-1.5 mm. longis singulis 0.6-0.7 mm. latis. 

 Stylus 20 x 0.6 mm., per 7 mm. exsertus. Ovarium 5 x 3.5 mm. apice per 3 mm. 

 dense gracili-strigulosum, lobis apicalibus super loculos 1.5 mm. 



Type Collection and Locality: L. Williams 7587 (HOLOTYPE F; isotype NY); 

 Peru, Dept. Amazonas, "La Jalca" between Chachapoyas and Moyobamba, alt. 

 2700-3300 m., 21 Jan. 1930. Known only from the type collection. 



The closest relative of this species seems to be B. markgrafii; it may be dis- 

 tinguished from that species by the leaf tubercles in 6 rows at the widest part of 

 the leaf, the generally finer stem, hypanthial, and lower leaf surface pubescence, 

 the much larger pedicellar bracts, and much longer apical ovary lobes. 



37. Brachyotum lymphatum Wurdack, sp. nov. 



Trichomata laevia. Famuli novelli obscure quadrangulati dense hirsutuli pi- 

 lis 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 an- 

 gusteque expressis; supra modice brevi-strigosa, pilis 3"5/mm. 2 et ad 1.5 x 0.25 

 mm. parte basali %—% adhaerente; subtus modice hirsutula, pilis 5-10/mm. 2 et ad 

 1 mm. longis, glandulis soiitariis 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. 



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). 



Distribution: Dept. Cauca, Colombia, alt. 3300-3600 m. 



Between "Perro Muerto y la Laguna del Paez," Cuatrecasas 19034 (F). 



The small large-pored anthers of B. lymphatum suggest a general affinity with 

 B. markgrafii and its relatives. The leaf pubescence, sepal shape, and eglandu- 

 lar 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. 



38. Brachyotum markgrafii Wurdack, sp. nov. 



Trichomata laevia. Ramuli novelli obscure quadrangulati, cum petiolis pedi- 

 cellisque modice vel dense laxeque longo-strigulosi, pilis basibus patentibus 



