. Fio. 36.—Flower of Radib)) hyiiertrophied by Ci/slopi's ainJiili'ii. The white BWoUen conidial occupy the enlarged petals, sepals iiml ovaiius. (1>|-. Bruns' phot.) develop lo intercellulai' niycclia, tine short lateral twigs of which pierce the wall of the host-cells and liccomi' litth- spherical haustoria. The oogoniu arise as thick-wallrd spherical swellings on the mycelium. The antheridium, after applying itself to tlie oogonium, widens and pr(»jects a thie fertilization-tuhe throiigli the wall to the egg-cell. After fertilization is ellected, the egg-cell is enclnsed in a
. Fio. 36.—Flower of Radib)) hyiiertrophied by Ci/slopi's ainJiili'ii. The white BWoUen conidial occupy the enlarged petals, sepals iiml ovaiius. (1>|-. Bruns' phot.) develop lo intercellulai' niycclia, tine short lateral twigs of which pierce the wall of the host-cells and liccomi' litth- spherical haustoria. The oogoniu arise as thick-wallrd spherical swellings on the mycelium. The antheridium, after applying itself to tlie oogonium, widens and pr(»jects a thie fertilization-tuhe throiigli the wall to the egg-cell. After fertilization is ellected, the egg-cell is enclnsed in a firm uneven mend)rane, and hibernates inside the oogonium. In spring the jdasma of the oospore forms biciliati'
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Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectparasit, bookyear1897
