24 





Fig. 38. Ciipressus whillcyamr, megaspore meml)rane (surface), phase con- 

 trast. X 4000. (From von Liirzer in Grana palynologica, 1: 2, 1956.) 



Ji^^-:'s.Ti 



Fig. 39. Jiiniperm communis; megaspore membrane (optical section). >: 1000. 

 (For LO- patterns ot the menil)rane surface, see Frontispiece.) 



