150 BOTANY. 
308. Asexual reproduction is by means of ciliated zo6- 
spores, one of which may form in each cell and escape 
through a round hole in the cell-wall (D, Fig. 74). 
309. In the sexual process the female organ, the carpo- 
gone, is a single cell, wide below and tapering above into 
a long slender canal, the trichogyne, which is open at its 
apex (A, og, Fig. 74). In the swollen basal portion there 
Fia. 74.—Coleochsete. an, antherids; og, carpogones, each with a trichogyne; 
z, z, antherozoids; B, fertilized carpogone, surrounded by the covering, r (‘‘ peri- 
carp”), the whole forming the spore-fruit; C. spore-fruits burst open, showing 
interior tissues; D, zodsporesfrom C. Magnified 350 times. 
is a considerable mass of protoplasm, which is the essential 
part to be fertilized. The male organs, the antherids, are 
formed as flask-shaped protuberances which grow out of 
adjoining cells, In each antherid a single oval biciliate 
antherozoid is formed (A, 2, 2, Fig. 74). 
810. Fertilization is doubtless effected by these anthero- 
zoids coming in contact with the protoplasm of the carpo- 
