. Elementary botany . the integuments increase in extent and harden as the seed is formed. 461. Perisperm. — In most plants the nuce llus is all consumed in the devel- opment of the endosperm, so that only minute frag- ments of disorganized cell walls remain next the in- ner integument. In some plants, however, (the water- lily family, the pepper „ ^ig. 308. J J 1 rr Diagrammatic section of ovary and ovule at time family, etc.,) a portion of of fertilization in angiosperm /, funicle of ovule; J '/ x Hi nucellus; ;;/, micropyle; o, antipodal cells or the nucellus remains in- embryo sac ; *, end
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