360 FLORA OF SOUTH AMERICA. 



** Capsula bivalvis, carnosa v. coriacea. 



To this group belong Drt/monia, Alloplectus, Nematanthus, 

 Centrosoleuia, Tapina, and perhaps, Sarmienta. Among these, 

 Drymonia and Tapina are not well known to me ; Alloplectus 

 is distinguished by the large coloured divisions of the calyx, 

 and the contracted mouth of the corolla with a spreading 

 equal limb ; Nematanthus by the tubular or tubular-campa- 

 nulate corolla gradually enlarged at the top ; Centrosoleuia by 

 the tubular corolla with a spur at the base ; Sarmienta by the 

 abortion of two of the stamina. 



*** Capsula membranacea. 



Under this head must certainly be comprised Cremosperma, 

 (Benth. PI. Hartw.), with a tubular 5-fid calyx, and a corolla 

 like that of Diastema ; and probably also Gasteranthus and 

 Niphtea, both distinguished by the singular forms of the 

 corolla, but of which the ripe fruit is unknown to me. 



Tribe 3. Cyrtandre^e. Ovarium liberum. Albumen te- 

 nuissimum v. nullum. 



Although formerly considered as confined to the Old 

 World, this tribe has now been found to contain, besides the 

 Klugia of Schlechtendal, referred by Brown to the E. Indian 

 genus Glossanihus, three purely American genera, viz : 



Episcia, calyce 5-partito. 



Tussacia, calyce laxe campanulato, breviter et late 5-fido, 

 lobis dentatis. 



Napeanthus, calyce tubuloso 5-fido, lobis oblongis. 



905. Gesneria (Corytholoma) guianensis, sp. n., herbacea, 

 erecta, piloso-hirtella, foliis oppositis breviter petiolatis ovatis 

 oblongisve acutiusculis grosse crenatis basi angustatis ob- 

 tusisve membranaceis sparse hirtellis subtus pallidis, pedi- 

 cellis axillaribus solitariis v. geminis folio multo brevioribus, 

 calycis laxi laciniis e basi lata subulato-acuminatis, corollse 

 tubo leviter incurvo vix ventricoso, galea retusa quam labium 

 patenti-reflexum duplo longiore. — Rocky places of the Con- 

 con Mountains, Schomburak. 



