PEAT hake 
Zamia floridana. 
Fig. 1. Median longitudinal section through upper part of ovule at time of pollina- 
tion: ¢, coat of ovule; m, micropyle; pc, pollen chamber; n, nucellus; p, prothallus. 
(X 18 diam.) — 
Fig. 2. Median cross section of female cone at time of pollination. (3 nat. size.) 
Fig. 3. Mature pollen cone with pollen shedding. (4% nat. size.) 
Fig. 4. Cross section of mature pollen cone, showing pollen sacks on lower surface 
of scales. (3 nat. size. ) 
Fig. 5. Median longitudinal section through apex of nucellus, showing pollen 
chamber and developing pollen tubes. (x 100 diam.) 
Fig. 6. Cone at time of fecundation, having reached maximum size. (# nat. size. ) 
Fig. 7. Scale and attached seeds at time of fecundation. (4 nat. size.) 
Fig. 8. Two seeds at time of fecundation, having reached maximum size. (4 nat. 
size. ) 
Fig. 9. Median section through seed just before fecundation, showing relative size 
and location of parts (diagrammatic); c, coat of ovule; m, micropyle; n, nucellus, 
showing pollen tubes hanging down into the archegonal chamber ac; e, egg cell; p, 
prothallus. (xX 3 diam.) 
Fig. 10. Median section through young archegonium, showing central cell and 
nucleus before the cutting off of the canal cell. (X 100 diam.) 
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