28 



LARIX: 



Megaspore membrane: Larix occidentalis (Fig. 44). 



Pollen grains: Larix decidua f. polonica (Fig. 45 B), L. (jmeUni y&r. japonica 

 (Fig. 45 A), L. occidentalis (Fig. 45 C). 



Fig. 44. Larix occidentalis; acetolyzed megaspore wall, optical section (above) 



and surface (below), x 1000. 





B 



Fig. 45. A, Larix gmelini var. japonica; exine stratification and LO-patterns. 

 B, L. decidua f. polonica; exine stratification and "LO-patterns". C, L. occi- 

 dentalis; lateral view, surface and optical section (x 1000). 



