1957] 



ANATOMY OF GUAYANA MUTISIEAE 



463 



FIG. 108. Chimantaea rupicola (Steyermark & Wurdack 748)> portions of flower drawn 

 to show venation. A, corolla; B, style; C, achene; EV-H, sections of corolla base and 

 achene at levels indicated. A, B, X 4.5; C-H, x 9» 



achene. The venation of Stiff tia uniflora was found to be like that of S. chrysantha, 

 with the exception that no median veins were found in the corolla of S. uniflora. 



Stomatochaeta. 



The other genera of Gochnatinae considered here, Stomatochaeta, Chimantaea, 

 and Quelchia, have some features seen in Stenopadus and Stiff tia but are simpler 

 in most features of floral vasculation. In the genus Stomatochaeta, S. crassifolia 

 (fig. 107) shows a representative condition. The corollas (fig. 107A) have lateral 

 veins which join at the tip of each lobe. In addition, subsidiary bundles, as in 

 Stenopadus kunhardtii, branch from the laterals near the sinuses and extend for 



