Handbook of practical botany for the botanical laboratory and private student (1908)
Strasburger, Eduard, 1844-1912, Hillhouse, William, 1850-1910 · London, S. Sonnenschein; New York, Macmillan · leaf 412
t to the number of two,which have resulted from the division of their mother-cell. Thepollen-tulles attain to the embryo-sac, penetrate between the cellsof the neck, and thus to an oosphere, into which one of the two FERTILISATION IN PICEA. 375 reproductive cells passes (Fig. 137, B). In specially… … J) J ^5^81^0
Botany · Plant physiology · Microscopy
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