1963] 



BOTANY OF THE GUAYAXA HIGHLANDS PART V 



211 



nerves of the leaf -blades, and short-petiolate leaf-blades. From H. killippii Standi, 

 of Colombia it differs in the lack of transversely roughened or wrinkled branches, 

 thicker, less prominently nerved leaf-blades, longer corolla-tube, and broader 

 corolla-lobes which are more rounded at the apex. From H. macromeris Standi., 

 also of Colombia, it may be distinguished by the shorter corolla-tube with 6 in- 

 stead of 5 corolla-lobes, and by the thicker leaf-blades with fewer pairs of lateral 

 nerves which are not prominent as they are in H. macromeris. 



Hillia psammophila Steyermark, sp. nov. Fig. 74. 



Planta scandens ligneosa epiphytica omnino glabra, ramis gracilibus ; stipulis 

 caducis; foliis petiolatis, petiolis 6-11 mm longis crassiusculis ; laminis coriaceis 



Fig. 74. Hillia psammophila. A, habit, X %. B, corolla, spread open, x y 2 . 

 C, calyx and pistil, X 



