Dr. M. Masters, 



Linn. Soc. Joubn. Bot. Vol. xxii. Pl. 10, 



RkKKRKNCKS ; 



A, Mule catkins, «ection ; B. c. D, E. Stamezu (b. bottom. E. top, c, D, intermediate positions) ; r, Q, Poll 



en. 



