46 Contributions from the Gray Herbarium 



ora oblique obovato-ovalia apice rotundata. Capsula orbicularis 

 emarginata basi rotundata sparse breviterque patenti-pilosula et 

 ciliolata 8 l () mm. longa lataque. Semen pilosum 5 mm. longum. 

 Arillus 2.2 2.5 Dim. alius, margine scarioso undulato sparse piloso, 

 margine dorsali vel horizontal! vel paullum curvato-adscendente vel 

 dejecto tunc angulum ca. 45 formante. Puebla: rocks and 

 rocky soil, Cerro de Santa Lucia, near San Luis Tultitlanapa, July 

 L907, Purpus 2764 (type coll.: BG). T. 2. Fig. 32. 



.".I. V. microtricha, sp. nov. Suffruticulosa ramosa 2.5 dm. 

 alia et ultra basi invisa. Caulis ut racemi subdense incurvo-pu- 

 berulus. Folia ovata acuta ad acuminata mucronulata basi cune- 

 ato-rotundata vel cuneata fiima nervis iateralibus 3-5-jugis non 

 reticulal is supra viridiasubtuspaullulopallidiorautrinque subdense 

 puberula pilis brcvibus incurvis 2.7-3.8 cm. longa 1-1.2 cm. lata, 

 in petiolis mcurvo-puberulis 2-3 mm. longis. Racemi laxiflori 3.5- 

 7.5 cm. longi. Flores ca. 12-18 ut videtur ochroleuci, in pedicellis 

 incurvo-puberulis 4 mm. longis. Sepala ovato-lanceolata acuta in- 

 curvo-puberula 3.5-3.8 mm. longa. Alae ellipticae apice rotun- 

 datae basi cuneatae ad costam et apicem versus sparse incur vo-pu- 

 berulae 5.5 mm. longae 4 mm. latae. Carina glabra 6 mm. longa. 

 Petala superiora oblongo-obovata basin versus ciliata 5.5 mm. 

 longa. Petala lateralia minima oblonga obtusa ad 1 mm. longa. 

 Capsula elliptica emarginata incurvo-ciliolata et in lateribus prae- 

 cipue ad septum pubescens pilis paucis brevissimis appressis 9 mm. 

 longa 8 mm. lata. Semen ellipsoideum pilosum 5 mm. longum. 

 Arillus 3 mm. altus palliiformis umbone pilosulo, margine lato scari- 

 oso lobulato, lobis Iateralibus et dorsali descendentibus sed non 

 appressis vix indicatis. Hidalgo : Zimapan, Coulter 732 p. p. 

 (type: K, fragm. G). T. 1. Fig. 28. 



55. P. brachytropis, sp. nov. Suffruticulosa ramosa 2.5 dm. 

 alta et ultra basi invisa. Caulis striatus dense pubescens pilis bi- 

 f ormibus (aliis brevibus incurvis aliis longis late patentibus) . Folia 

 ovata acuta mucronulata basi cuneata vel cuneato-rotundata firma 

 nervis Iateralibus 2-3-jugis inconspicuis concoloria utrinque sub- 

 sparse pubescentia pilis longiusculis incurvo-patentibus 2.5-3.8 cm. 

 longa 1.2-1.4 cm. lata, in petiolis 1.5 mm. longis. Racemi ad 3 cm. 

 longi ca. 9-flori. Flores ut videtur ochroleuci. Sepala ovata acuta 

 ciliata et sparse pubescentia 2 mm. longa. Alae ellipticae apice ro- 

 tundatae basi cuneatae ciliolatae ad costam sparse puberulae 3.8 



