TABLE 15 



MEAN PERCENTAGES OF THE EXPECTED NUMBERS OF LONGITUDINAL VEINS OF EACH ORDER PRESENT IN THE 

 INTERRIDGE AREAS OF TWENTY-TWO SPECIES OF ASPLUNDIA, TEN OF DICRANOPYGIUM, AND FOUR OF 



SPHAERADENIA, AND STANDARD DEVIATIONS* ** 



k*> 



Asplundia (29) 

 Die r a nop vgium 



(15.5) ' 

 Sphaeradenia (4) 



First 

 Order 



100,0 

 100,0 



100,0 



Second 

 Order 



100,0 



98.3, 5.28 



100,0 



Third 

 Order 



98.9, 5.33 

 90, 19.2 



100,0 



Fourth 

 Order 



71.9,33.4 

 48.3, 37.9 



68.8,33.1 



Fifth 

 Order 



Sixth 

 Order 



15.3,21.6 



5.63,9.41 



35.9, 35.5 



0.43, 1.46 

 0,0 



1.56, 1.80 



Seventh and 

 Higher Orders 



0,0 

 0,0 



0,0 



*The mean percentages for each genus were computed as follows. For every species the percentage of the expected number of veins present of each 

 order was determined, based on a sample of one to several interridge areas. Then, the percentages for each order of vein were averaged for all species 

 (the species being weighted equally, regardless of the number of interridge areas counted per species). 

 **In parentheses after the name of each genus is indicated the number of interridge areas examined of all species. 



