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



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broadly acute to obtuse, with the 5 primaries and 20-50 pairs of secondaries nar- 

 rowly impressed above and elevated below but obscured by the pubescence; above 

 densely loose-strigose, the slender hairs 4-9/mm. 2 and each on a low mamma with 

 the basal V 5 -% adherent; below very densely loose-sericeous-strigose 30-50/mm. 2 

 Inflorescence with a terminal dichasium and an additional pair of flowers at the 

 bi-leaved node below the dichasial node, often with another pair of flowers at the 

 next-lower persistently bi-leaved node and then the leaves of the penultimate 

 peduncular node very early caducous; the pair of bracts at the base of the terminal 

 dichasium similar to the floral bracts but slightly larger (16 x 14 mm.) and cadu- 

 cous just before anthesis. Flowers 5-merous, each closely invested by a pair of 

 persistent bracts inserted at the immediate base of the hypanthium. Pedicel 3 mm. 

 to as much as 14 mm. (in the lower axillary flowers) below bracts; floral bracts 

 10-11 x 13 mm., suborbicular with obtuse short-apiculate apices, outside densely 

 fine-strigulose on central V^'Viy toward the margins and inside glabrous, the mar- 

 ginal cilia minute. Hypanthium 8-10 x 10-11 mm., 0.5 mm. thick medianly, very 

 densely sericeous-strigose with the hairs to 8 mm. long. Sepals 5.5-6 x 6-7 mm., 

 broadly ovate with the apices obtuse and apiculate, united at bases 2.4-2.8 mm., 

 the sinuses broadly acute. Petals greenish-white, 16-18 x 14-17 mm., asymmet- 

 rically obovate with the apices truncate to slightly oblique, the cilia 0.1-0.7 mm. 

 (the terminal one 1-1.5 mm.) and gland-tipped but the glands rather early cadu- 

 cous. Filaments 7-9.5 mm.; anthers 5-6 mm.; connective at anther base 1-1.2 mm. 

 but scarcely (only 0.1-0.3 mm.) free of the anther, the ventral lobes 0.3-0.6 mm. 

 Style 20-24 mm. long and tapering from 0.7-1.3 mm. diam. basally to 0.4 mm. 

 apicaily, exserted 4 mm. Ovary 7.5 x 6 mm., very densely short-strigose on the 

 apical 4.5-5 mm., the apical lobes 0.8 mm. above the locules. 



Type Collection and Locality: Weberbauer 4170 (LECTOTYPE BR; isotype 

 G-DEL); "in provincia Chota, in montibus ad occidentem a Huambos versus,... 

 3100-3200 m. s. m.,", Dept. Cajamarca, Peru. 



Type Photographs: Gleason 28-6 and F 16714 (destroyed holotype at B). 



Distribution: Dept. Cajamarca, Peru, alt. 3000-3300 m. 



Cutervo, Raimondi 3012 (USM); Llama, Sandeman 4177 (K), Sandeman 4197 (K). 



The flowers were originally described as 4-bracteate. On all specimens ex- 

 amined, however, there are 2 bracts per flower, but the 2 bracts at the base of the 

 compact terminal dichasium so closely invest these 3 flowers until anthesis that 

 only a careful examination shows the true number of floral bracts. B. racemosum 

 is most closely related to B. gleasonii, but differs in the smooth trichomes, greater 

 sepal union, more conspicuous and differently shaped floral bracts, and longer 

 hypanthial pubescence. These two species have the largest hypanthia of all spe- 

 cies in^the genus. 



13. Brachyotum gleasonii Wurdack, sp. nov. 



Trichomata minute modiceque aspera. Ramuli novelli obscure quadrangulati 

 cum petiolis pedicellisque dense hirsutuli vel laxo-brevi-strigosi. Petiolus (6-)10- 

 25 mm. Lamina 30-75 x 10-35 mm. elliptica vel lanceolato-elliptica apice acuta 

 vel anguste obtusa basi obtusa, nerviis primariis 5 (aut 3"5 distinctioribus cum 

 marginum duobus additis plus minusve indistinctis) supra anguste impressis sub- 

 tus expressis secundariis utrinque 20-25 supra et subtus ab piliis occultis; supra 

 dense laxo-gracili-strigosa, pilis 3-ll/mm. 2 basi per %-% adhaerentibus; subtus 

 modice hirsuta vel laxo-gracili-strigulosa 5-15/mm. 2 , glandulis solitariis sparsis. 

 Flores 5-meri pierumque terni vel triterni, cum foliis duobus ad basim dichasii. 

 Pedicellus sub bracteis 3-10 mm., super 2-4(-10) mm.; bracteae 5-9 x 2-4.5 mm. 

 ellipticae caducae vel persistentes, supra in parte %-% apicali strigulosae basim 



