Identifier: origindevelopmen00kemp (
find matches)Title:
The origin and development of the PycnidiumYear:
1918 (
1910s)Authors:
Kempton, F. E. (Forrest Ellwood), b. 1883Subjects:
Ascomycetes ThesesPublisher: Contributing Library:
University of Illinois Urbana-ChampaignDigitizing Sponsor:
University of Illinois Urbana-ChampaignView Book Page:
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view book online to see this illustration in context in a browseable online version of this book.Text Appearing Before Image:61,62,63. B. firnbriatuui ( E. & H. ) Sacc. Early stages ofthe pycnidium in which a hypha coils, branches anddivides to form a knot-like mass. Sphaeropsis Fig. 64. S. malorum Pk. An early stage in the symphogenous de-velopment in which branches a,b,c, interweave near theirends to form a ball. Fig. 65. Interwoven hyphae in early sta^e of a symphogenous de-velopment. Fig. 66. A slightly later stage. Figs. 67,68. S. oitricola McAlp. Very early stages in the originof the simple meristogenous development of pycnidia. Figs. 69,70. Slightly later stages. Figs. 71,72,73,74. Later stages with short hyphae branching fromthe masses. Figs. 75,76,77. Unusual examples of developments in which morethan one hypha is involved. The mode is compoundmeristogenous• Coniothyrium Figs. 78,79. C. pyriana (Sacc.) Shel. Early stages in thedevelopment. Figs. 80,81. Later stages in which numerous branches from thedividing mass are involved. Fig. 8£. Pseudo-parenchymous mass from which a pycnidium arises.Text Appearing After Image:41 Plate IV. Fig. 83. Coniothvriuin species from laboratory air, Early stageShowing short cells and short branches as origin. Pig. 84. Slightly later stage in which cells and branches frommain hypha divide into short cells and anastomose. Fig. 85. Stage slightly more developed than fig. 84. A slightvariation from the simple meristogenous type is shownhere. Septoria Fig. 86. S3, polygonorum Desm. Beginning stage of the simplemeristogenous development. Fig. 87. Development in which the original hypha and numerousbranches are involved. Fig. 88. Pseudo-parenchymous primordial mass formed by thesymphogenous method. Figs. 89,90. S. scrophulariae ?k. Early stages in the compoundmeristogenous development. Fig. 91. S. helianthi E. & K. Early stage in the beginning ofthe simple meristogenous development. Fig. 92. A later stage. Sphaeronaemella Fig. 93. S. fragariae S. & ?. Early stage of simple meristogen-ous development. Fig. 94. A later stage in which branches and original hypha haveaNote About Images 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 work.