Finally, Oogonia may be mentioned as occurring in such genera as Peronospora amongst moulds, Cystopus amongst Uredines, and the Saprolegniaceæ amongst the Physomycetes. The zoospores being furnished with vibratile cilia, are for some time active, and need only water in which to disseminate themselves, and this is furnished by rain.
We have briefly indicated the characteristics of some of the more important types of spores to be found in fungi, and some of the modes by which it is known, or presumed, that their dissemination takes place. In this summary we have been compelled to rest content with suggestions, since an exhaustive essay would have occupied considerable space. The variability in the fruit of fungi, in so far as we have failed to demonstrate, will be found exhibited in the illustrated works devoted more especially to the minute species.[F]
Cunningham, in “Ninth Annual Report of the Sanitary Commissioner with the Government of India.” Calcutta, 1872.
See “Corda Icones,” tab. 2.
Corda, “Icones Fungorum,” vol. vi. Prague.
Tulasne, “Fungi Hypogæi.” Paris.