. Fio. :i6.—Flower of Radish hypertrophied by Ct/stopi's cainiidv.s. The white swollen conidial cushions occupy the enlarged petals, sepals and ovaries. (Dr. Bruns' phot.) develop to intercellular mycelia, fine short lateral twigs of which pierce the wall of the host-cells and become little spherical haustoria. The oogonia arise as thick-walled spherical swellings on the mycelium. The antheridium, after applying itself to the oogonium, widens and projects a fine fertilization-tube through the wall to the egg-cell. After fertilization is effected, the egg-cell is enclosed in a firm uneven membr
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. Fio. :i6.—Flower of Radish hypertrophied by Ct/stopi's cainiidv.s. The white swollen conidial cushions occupy the enlarged petals, sepals and ovaries. (Dr. Bruns' phot.) develop to intercellular mycelia, fine short lateral twigs of which pierce the wall of the host-cells and become little spherical haustoria. The oogonia arise as thick-walled spherical swellings on the mycelium. The antheridium, after applying itself to the oogonium, widens and projects a fine fertilization-tube through the wall to the egg-cell. After fertilization is effected, the egg-cell is enclosed in a firm uneven membrane, and hibernates inside the oogonium. In spring the plasma of the oospore forms numerous biciliate