. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 327 O. Pycnia or pycnial stage I. .Ecia or tecial stage II. Uredinia or uredinia stage III. Telia or telial stage The spores in all cases, except those of the basidiospores and. Fig. 241.—Amphispores, urediuiospores and teliospores of Puccinia vexans. After Holway. pycniospores arise by direct conversion of a mycelial cell into a spore, i. e., they are chlamydospores. Mesospore is a term applied to occasional unicellular forms of teliospores found in Puccinia and related genera which do not usual
. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 327 O. Pycnia or pycnial stage I. .Ecia or tecial stage II. Uredinia or uredinia stage III. Telia or telial stage The spores in all cases, except those of the basidiospores and. Fig. 241.—Amphispores, urediuiospores and teliospores of Puccinia vexans. After Holway. pycniospores arise by direct conversion of a mycelial cell into a spore, i. e., they are chlamydospores. Mesospore is a term applied to occasional unicellular forms of teliospores found in Puccinia and related genera which do not usually have unicellular teliospores. As has been said the pycniospores seem to be functionless though by some it is thought that they do function but that man has yet failed to find the conditions under which they readily germinate and cause infection. The secial stage appearing first, and thus commonly in the spring, is often called the "spring ;. 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 Stevens, Frank Lincoln, 1871-1934. New York : Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1913
