ANDERSON: EMBRYOGENY OF MARTYNIA LOUISIANA 157 
PLATE 8 
FiGs. 26-33, longitudinal sections of embryo-sacs. F1G. 34, cross section 
of antipodals. 
Fic. 26. Mature embryo-sac; polar nuclei side by side near the center 
of the sac; G, egg-cell; 5 synergid; N, antipodals; Pn, polar nuclei, * 300. 
Fic. 27. Mature embryo-sac; polar nuclei fusing, x 300. 
Fic. 28. Mature saheeaie: polar nuclei fused, xX 
Endo eae: 
.30. Fertilization. Sperm and egg nuclei in contact: old _ 
tube nt prominent; G, egg-cell; T, pollen tube; Sn, synergid, 
Fics. 31 and 32. Development of endosperm and elongation oF ‘nbs. 
podals, X 350. 
Fic. 33. Development of endosperm and embryo; four antipodals, N; 
E, elongating embryo; T, old pollen tube, X 350. 
FIG Cross section of chalazal end embryo-sac showing four anti- 
G. 34 
podals, N, X 350. 
