. Botany for high schools. Botany. CHAPTER XXVII. FUNGI (Continued). THE SAC FUXGI, OR ASCUS FUNGI. (Class Ascomycetes.) 432. General characters.—The mycelium is septate, and grows either within the substratum or upon the surface. In the latter case it often sends branches, called haustoria, into the cells of the host, to obtain nutriment. Alany of the species are poly-. Fig. 220. A, a. perfect fungus (Cordyceps militaris) parasitic on pupa of a moth. Head por- tion of the fungus enlarged, showing fruit bodies (perithecia) containing asci and spores. B, an imperfect stage showing conidiophores
. Botany for high schools. Botany. CHAPTER XXVII. FUNGI (Continued). THE SAC FUXGI, OR ASCUS FUNGI. (Class Ascomycetes.) 432. General characters.—The mycelium is septate, and grows either within the substratum or upon the surface. In the latter case it often sends branches, called haustoria, into the cells of the host, to obtain nutriment. Alany of the species are poly-. Fig. 220. A, a. perfect fungus (Cordyceps militaris) parasitic on pupa of a moth. Head por- tion of the fungus enlarged, showing fruit bodies (perithecia) containing asci and spores. B, an imperfect stage showing conidiophores bearing white masses of conidia. morphic, , different stages in the life history of the same species appear under different forms. Some of these forms are asexual stages and bear conidia (asexual spores) which serve to multiply 261. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Atkinson, George Francis, 1854-1918. New York, H. Holt and Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
