1953] 



REVISION OF BRACHYOTUM 



379 



9 x 1-1.2 mm. above, often ebracteolate in the more crowded and floriferous 

 cymes; peduncular bracts and pedicellar bracteoles very early caducous, grading 

 in size from peduncular bracts 7x2 mm. or smaller to pedicellar bracteoles 0.7 x 

 0.15 mm., glabrous except for sparse short appressed marginal and abaxial-mid- 

 vein hairs. Hypanthium 3 .5—5 x 3 "4 mm., 0.1-0.3 mm. thick medianly, nearly gla- 

 brous to very sparsely strigulose or loosely and sparsely short-strigose. Sepals 

 2-3.5 x 2.5-4 mm., broadly triangular and tipped with a short acumen, united at 

 bases 0.8-1.5 mm., the sinuses obtuse. Petals deep purple, 10-15 x 6-11 mm., 

 obovate with the apices broadly and asymmetrically obtuse, the cilia 0.1-0.3 mm. 

 and non-glandular or with early-caducous glandular tips. Filaments 3"5.5 mm.; 

 anthers 3*5 mm.; connective at anther base (0.6-)0. 8-1.1 mm., free of the anther 

 0.3-0.4 mm., the ventral lobing 0.1-0.4 mm. Style 15*24 x 0.4-0.5 mm., exserted 

 4-7 mm. Ovary 4-5 x 2.5-3 mm., sparsely to moderately strigulose on the apical 

 1-2.5 mm., the apical lobes 0.5-1 ram. above the locules. 



Type Collection and Locality: Weddell 4605 (HOLOTYPE P); Bolivia, Dept. 

 La Paz, "prov. de Larecaja et Caupolican (vallees entre Tipoani et Apolobamba) 

 Mai 1847... a 2500 metres" (fide holotype). 



Type Photographs: Gleason 5 1-3 (type no. of B. floribundum, in G-DC ?); 

 F16709 (destroyed isotype of B. floribundum at B); New York s.n. (holotype of B. 

 barbiferum). 



Distribution: southeastern Peru to northeastern Bolivia, alt. 2300-3500 m. 



PERU: Cuzco: "Lucumayo" in Prov. Convencion, herb. Marin 1610 (US); near Hual- 

 lahualla, Vargas 9708 p.p. (UC p.p., F). Puno: "Tabina" near Ayapata, Lechler 1857 

 (possible holotype of 8. floribundum G-BOIS; isotypes BR, K, P, S, W; fragments F); near 

 Limbani, Me teal f 30537 (G-DEL, NY, UC, US); Prov. Sandia, Weberbauer 626 (G-DEL). 



BOLIVIA: La Paz: between Ocara and Ancoma, Tate 861 (NY); near Sorata, Mandon 

 640 p.p., (BR p.p., F, G-DEL, G-BOIS, GH p.p., K, NY p.p., P, S, W p.p.); "Cocopunco" 

 in the Cordillera Real, Tate 331 (NY), Tate 362 (holotype of B. barbiferum NY). Without 

 Province: Bang 2860 (BR, NY, US). 



WITHOUT COUNTRY: "Huaycani," Pearce s.n. (BM, K). 



Vernacular Names: Tili-tili (Vargas 9708). 



Several sheets of Lechler 1857 (G-BOIS, K, W) were annotated by Triana, but, 

 of these, only the Geneva specimen had been annotated by Cogniaux also; the 

 Gleason type photograph shows still another sheet annotated by both Triana and 

 Cogniaux. The locality of the Pearce collection (Huaycani, or Huagcani ?, or 

 Huagcaui ?, or Huaycaui ?) could be any of several localities in northeastern Bo- 

 livia with slightly different spellings. Other parts of Mandon 640 include B. grise~ 

 bachii and Tibouchina latifolia (Naud.) Britton; a portion of Vargas 9708 is B. 

 grisebacbii. 



All the cited collections are certainly conspecific. "Typical" B. sanguino- 

 lentum has young branchlets nearly glabrous except for the short nodal setae; 

 petioles 2-5 mm.; blades 18-33 x 9-13 mm., above very sparsely strigulose (the 

 hairs less than l/mm. 2 ) to glabrous, below very sparsely strigulose along the pri- 

 maries but nearly or quite glabrous on the secondaries and surface; and the hy- 

 panthium glabrous or nearly so, the hairs less than l/mm. 2 This element includes 

 Weddell 4605, Mandon 640 p.p., Tate 861 , and Bang 2860; Markgrafs description 

 of B. pedicellatum differs in no respect from these specimens. Aside from Weber- 

 bauer 626 and Pearce s.n., the remainder of the specimens cited under B. sangui- 

 nolentum have young branchlets sparsely to moderately strigulose or short-stri- 

 gose; petioles 3-18 mm.; blades (17-)30-76 x (6-)15-25 mm., above sparsely strig- 

 ulose to moderately short-strigose (2-7/mm. 2 ), below sparsely to moderately strig- 

 ulose or loose-short-strigose along the primaries and sparsely strigulose on the 

 surface (2-14/mm. 2 ); and the hypanthium sparsely strigulose (2-12/mm. 2 ). These 



