Elementary botany (1898) Elementary botany elementarybotany00atki Year: 1898 GAMETOPHYTE AND SPOROPHYTE. 231 synergids. The egg cell is all that remains of the archegonium in this reduced prothallium. The three nuclei at the lower end are the antipodal cells. Fig. 302. Podophyllum peltatum, ovule containing mature embryo sac ; two synergids and egg at left, endosperm nucleus in center, three antipodal cells at right. 455. Embryo sac is the young female prothallium.—In figures 303, 305 are shown the different stages in the develop- ment of the embryo sac in lilium. The embryo sac at this st
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