Fig. 115. Stages in the development of the embryo and cellular endosperm in 

 AcalypJia indica. A, longitudinal section of ovule at fertilization; B, embryo sac with 

 pollen tube, zygote, fused polar nuclei beside male nucleus, vestigial megaspores; 

 C, zygote dividing, four free endosperm nuclei; D, embryo four-celled, many free 

 endosperm nuclei dividing; E, embryo multicellular with distinction of body and 

 suspensor; F, embryo with two-lobed body and suspensor, endosperm cells walled. 

 ca, funicular side of outer integument ( in fruit, a caruncle ) ; liy, hypostace; nh, 

 nucellar beak; nv, nucellar vascular supply; ob, obturator; pt, pollen tube; z, zygote. 

 {After Johri and Kapil.) 



304 



