Bot. Contrib. Univ. Penn. 
Vol. II, Plate XIX. 
/ 
ss ceetlabinsag 
sacha tenets 
2 
bbspit preegaceaes wes 
oo sescbeset hase saa 
Plt 
aps 
gaits 
t= 
| orb sss epaee sgt 
samepachand aes ttt aS 
ARD ON RING-FASCIATION. 
Con 
