ClipArt ETC
"Stages in the formation of the megaspore, its germination, fertilization of the egg and endosperm cells. D, more highly magnified drawing of o in A showing archesporial cell at a." -Stevens, 1916

Megaspore Formation Stage 4

"Stages in the formation of the megaspore, its germination, fertilization of the egg and endosperm cells.…

"Stages in the formation of the megaspore, its germination, fertilization of the egg and endosperm cells. E, a, archesporial cell enlarged and ready for division; nu, tissue of the nucellus." -Stevens, 1916

Megaspore Formation Stage 5

"Stages in the formation of the megaspore, its germination, fertilization of the egg and endosperm cells.…

"Stages in the formation of the megaspore, its germination, fertilization of the egg and endosperm cells. G, row of four megaspores descended from the archesporial cell, only the upper one, m, functional, the other soon disintegrate." -Stevens, 1916

Megaspore Formation Stage 7

"Stages in the formation of the megaspore, its germination, fertilization of the egg and endosperm cells.…