The spermatozoid coalesces with the oosphere, which secretes.    From Wordnik.com.  [Scientific American Supplement, No. 531, March 6, 1886] Reference

The product of the union of an antherozoid and an oosphere is termed an.    From Wordnik.com.  [Scientific American Supplement, No. 531, March 6, 1886] Reference

The protoplasm in one of these protuberances arranges itself into a round mass -- the oosphere or female cell.    From Wordnik.com.  [Scientific American Supplement, No. 531, March 6, 1886] Reference

Down this canal pass one or more antherozoids, which become absorbed into the oosphere, and this then secretes a wall, and from it grows the second or asexual generation.    From Wordnik.com.  [Scientific American Supplement, No. 531, March 6, 1886] Reference

Each protuberance bursts, and some of the spermatozoids come in contact with and are absorbed by the oosphere, which then secretes a cell-wall, and after a time germinates.    From Wordnik.com.  [Scientific American Supplement, No. 531, March 6, 1886] Reference

After impregnation the fertilized oosphere immediately surrounds itself with a cell-wall and becomes the oospore which by a process of growth forms the embryo of the new plant.    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1] Reference

In Coleochæte, the male cell is a round spermatozoid, and the female cell an oosphere contained in the base of a cell which is elongated into an open and hair-like tube called the trichogyne.    From Wordnik.com.  [Scientific American Supplement, No. 531, March 6, 1886] Reference

Guided by the synergidae one male-cell passes into the oosphere with which it fuses, the two nuclei uniting, while the other fuses with the definitive nucleus, or, as it is also called, the endosperm nucleus.    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1] Reference

The oosphere of characeæ, mosses and liverworts, and vascular cryptogams, where in special structures produced by cell-divisions there arise single primordial cells, which divide into two portions, of which the upper portion dissolves or becomes mucilaginous, while the lower contracts and rearranges itself to form the oosphere.    From Wordnik.com.  [Scientific American Supplement, No. 531, March 6, 1886] Reference

The pollen cells are formed from mother cells by a process of cell division and subsequent setting free of the daughter cells or pollen cells by rejuvenescence, which is distinctly comparable with that of the formation of the microspores of Lycopodiaceæ, etc. The subsequent behavior of the pollen cell, its division and its fertilization of the germinal vesicle or oosphere, leave no doubt as to its analogy with the microspore of vascular cryptogams.    From Wordnik.com.  [Scientific American Supplement, No. 531, March 6, 1886] Reference

There appears to be an actual passage of protoplasmic substance from theantheridium to the oosphere, constituting a real act of fertilization.    From Wordnik.com.  [Transactions of the American Philosophical Society] Reference

Just when and how they regain the vegetative structure, I am not yet able to say, having unfortunately failed to obtain sections of oogonia at the stage of the formation of the oosphere origins and of the rounding off of the oospheres.    From Wordnik.com.  [Transactions of the American Philosophical Society] Reference

(the so-called egg-apparatus), one is the egg-cell or oosphere, the other two, which may be regarded as representing abortive egg-cells.    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1] Reference