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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 8, No. 4 



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primaries impressed above and elevated below, the 30-35 pairs of secondaries ob- 

 scure above and mostly obscured by the pubescence below; above densely tuber- 

 culate-strigulose, the hairs 8-10/mm. 2 and in 20-30 irregular rows at the widest 

 part of the blade with their bases 0.3-0.4 mm. diam. and their abruptly attenuate 

 tips to 0.4 mm. long; below very densely hirsutulous, the larger hairs to 1 mm. 

 long and about 15/mm. 2 intermingled with a dense (35*40/mm. 2 ) covering of mi- 

 nute pseudo-stellate hairs. Flowers 4-merous, ternate or with an additional pair at 

 the node below the dichasial node, the slightly reduced leaves subtending the di- 

 chasium caducous usually just after anthesis. Pedicel 0.5-1 mm. below bracte- 

 oles, 1-3 mm. above; pedicellar bracteoles 3*4.5 x 0.8-1.3 mm., oblong-lanceo- 

 late, caducous usually just after anthesis, above glabrous, below moderately 

 loose-strigulose. Hypanthium 3.5*4.5 x 4-4.5 mm., 0.3 mm. thick medianly, densely 

 ascending-hirsutulous, the hairs 14-l6/mm. 2 with their bases 0.3-0.6 mm. diam. 

 and their rather abruptly long-attenuate apices to 2 mm. long. Sepals 3.5-4 x 3 "4 

 mm., triangular with acute apices, united at bases 0.5 mm., the sinuses acute. 

 Petals "viridia margine violacea," 11-13 x 9-10 mm., obovate with the apices 

 obliquely truncate, the marginal cilia 0.3-0.8 mm. and with rather caducous gland- 

 ular tips. Filaments 3.5-4.5 mm.; anthers 2.5*3 mm.; connective at anther base 

 0.8-0.9 mm. wide but not at all prolonged nor free of the anther. Style 15-20 x 0.8 

 mm., exserted 6 mm. Ovary 4x3 mm., sparsely short-strigulose on the apical 1.5- 

 2 mm., the apical lobes 0.5 mm. above the locules. 



Type Collection and Locality: Weberbauer 4405 (LECTOTYPE BR; isotype 

 G-DEL; fragment F); Peru, Dept. Amazonas, "Tambo Ventillas, ad orientem a 

 Chachapoyas versus," alt. 2400-2600 m. Known only from the type collection. 



Type Photographs: Gleason 28-7 and F 16720 (destroyed holotype at B). 



The closest relative of B. weberbaueri seems to be B. ledifolium which has 

 similar lower leaf surface hairs, petal shape, and ovary; however, the affinity is 

 distant. In many respects, B. weberbaueri suggests a linkage to B. angustifolium, 

 the sepals, petals, and inflorescence being somewhat similar; the peduncles, 

 while stout and not differentiated, are partially cernuous. 



16. Brachyotum gracilescens Triana, Trans. Linn. Soc. 28: 49. 1871. 



Trichomes smooth. Young branchlets quadrangular, sparsely strigulose and 

 soon glabrescent, the nodal patent hairs to 2 mm. long. Petiole 5"10 mm. Blade 

 20-60 x 10-25 mm., ovate with the apex acute and base obtuse to rounded-truncate, 

 thin and i.s. plane or somewhat rugose, the 3 primaries and 15-20 pairs of sec- 

 ondaries narrowly impressed above and narrowly elevated below; above very 

 sparsely short-strigose or long-strigulose with broad glabrous strips along the 

 primaries, the slender hairs mostly 1-2/mm. 2 (occasionally as dense as 5-6/mm. 2 ) 

 with their basal %-% adherent; below sparsely to very sparsely loose-slender- 

 long-strigulose along the veins, the surface glabrous except for the sparse (3* 

 15/mm. 2 ) solitary glands. Flowers 4-merous, solitary, binate, or ternate on long 

 (20-30 x 0.5 mm.) slender peduncles from opposite upper leaf axils, the bracteoles 

 at the peduncular apex 1.5-3 x 0.3-0.6 mm. and early caducous. Pedicel 3-11 mm. 

 below bracteoles, 1-5 mm. above; pedicellar bracteoles 1-1.5 x 0.2 mm., glabrous 

 except for the appressed cilia and a few hairs abaxially on the single vein, very 

 early caducous, absent in uniflorous inflorescences and usually absent in tht 

 center flower of the dichasium. Hypanthium 4-5 x 4-4.5 mm., 0.2-0.3 mm. thick 

 medianly, sparsely strigulose, the slender hairs 3*5(*9)/mm. 2 Sepals 3*4.5 x 3.5* 

 5.5 mm., the apical 2-3.5 mm. broadly subulate and 1.5*2.5 mm. wide, the apices 

 short-apiculate, united at bases 0.2-0.7 mm., the sinuses acute, outside glabrous 

 except for a few hairs on the basal %~% °f tne midrib. Petals carmine to basaliy 

 white with bright rose margins, 12-19 x 10-15 mm., asymmetrically obovate with 



