PLATE 23 



A. — Longitudinal section of the developing spikelet at the time the carpel or ovary 

 wall has begun to develop: g and g'', empty glumes; 1 and V, lemmas; sf, sterile flower; 

 p and p^, palets; st, stamen; c and c', rudiment of the carpel or ovary wall; c' is the 

 more rapidly growing part of the carpel. X 300. 



B. — Longitudinal section of a developing ovary: c and c\ developing ovary walls; 

 c' is the portion of the carpel from which the style or silk will develop; ov, ovule; 

 ovc, primordium of the inner ovule coat. X 300. 



