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:
Book ViewerAbout This Book:
Catalog EntryView All Images:
All Images From Book Click here to
view book online to see this illustration in context in a browseable online version of this book.Text Appearing Before Image:Macrophoma Fig. 49. M. citrulli (B. & C.) Berl. & Vogl. Two celled stage in the origin of the pycnidium, from drop culture. Simple meristogenous development. Fig. 50. The same twelve hours later. Figs. 51, 52. Early stages of other pycnidia, from drop culture. Slight variation from simple meritogenous type in that many branches are involved. Figs. 53, 54. Early stages in which much branching takes place. Drop culture. Figs. 55, 56. Early stages from petri dish culture. Figs. 57, 58. Later stages. Text Appearing After Image:40 Plate III. Fig. 59. IT. citrulli ( B. & C.) Berl. & Vogl. Symphogenous de-velopment in which branches from a number of mainstrands interweave. Fig. 60. A later stage in which a winding of the hyphae and oelldivision has taken place forming a pseudo-parenchymousmass • Sphaeronaema Figs. 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 morethaNote 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.