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Explanation of the Plate I. 



All the figures were drawn with the aid of a camera lucida at table level. E. 

 Leitz Wetzlar oculars and objectives were used, the magnification is indicated. Figure 

 1 is from seedling of Phleum pratense L. and Figs. 2-7 are of Poa pralensis L. 



Fig. 1. Abundant development of hairs on the coleorhiza and epiblast, 48 hours 

 after grain has been sown. Root is still in the coleorhiza; co, Cotyledon; cr, 

 Coleorhiza; e, Epiblast. X 130. 



Fig. 2. Two embryo type, showing two distinct coleorhiza and coleoptiles. X 106. 



Fig. 3. A seedling, showing one coleoptile enclosing two shoots and one 

 coleorhiza with two roots. X 36. 



Fig. 4. Sectional view of protuberance due to insect sting, showing relation of 

 larva to wall of ovary. X 200. 



Fig. 5. Embryo developing from nucellus and egg. X 557. 



Fig. 6. Polyembryony associated with budding of suspensor. X 557. 



Fig. 7. Polyembryony associaled in the budding from nucellus in antipodal 

 region, x 557. 



