PLATE XX. 



FlGS. 1,2. Asterocarpus Virginiaisin, spec. nov. Pages 41 to 45. 



Fig. 1. Three compound sterile pinnae, that were once attached to a common rachis, showing the 



gradation in depth and shape of the lobes, from the lower to the upper and summit 



portions. 

 Fig. 1 a. Portion of the lower part of the lower compound jiinna, magnified to show nervation. 

 Fig. 1 b. Portion of the summit of the uppermost compound pinna, magnified to show nervation. 

 .Fig. 2. Summit of the middle compound pinna. 



