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EXPLANATION OF PLATES XIV, XV 
All figures were drawn with the aid of an Abbé camera lucida and are 
reduced one-half in reproduction. The number accompanying the description 
of each figure indicates the magnification before the reduction. The lettering — 
of the figures is as follows: ii, inner integument; 07, outer integument; Cc, 
megaspore mother cell; m», nucleolus; f, sepia culus; ma, micropylar cell of 
axial row; ¢, epidermis of nucellus; ¢, tapetum; s, stringy cells of the nucellus; 
en, egg nucleus; sm, synergid nucleus; cz, Sanerel vacuole; p, polar nucleus; 
mm, microspore mother cell; dw, disintegrating air ; tn, tube nucleus; 87, 
generative nucleus; s', sperm nucleus; S?, sperm n cleus; fa, filiform apparatus, 
pic, pollen tube contents; rp, receiv sg m, micropyle; ah, antipodal 
; ch, chalazal haustorium; SP, 
> 
uo 
rima: ospe u 
cutinized walls; mrp, nucleolus of receiving polar; edn, endosperm nuclei. 
