INTRODUCTION TO TABLES 14-16 



(Wilder, in press d) 



aminae 



commissu 

 least some 



all of the Sphaeradenia group, these longitudinal veins tend to be 

 oriented nearest the abaxial surface of the lamina (Table 14). In 



m 



orders, and up to a given order the number of veins of an order is 

 twice, or nearly twice that of the next lower order (Table 15). 

 Whereas, longitudinal veins of interridge areas are normally 

 uDrieht. commissures varv from upright to inverted. In ten spe- 



laminaeach measuring 120 mm 



m 



and presumed expansion tissue develop in all species of Carludo- 

 vicoideae and in Cyclanthus bipartitus, respectively. Adaxial and 

 abaxial ridges are mostly associated with one or more longitudi- 

 nal veins. The main vein of a ridge is normally upright, whereas, 



may 



norm 



collateral, but bicollateral, amphivasal, and amphicribal veins 

 may also be present. 



129 



