250 PRINCIPLES OF SOIL MICROBIOLOGY 



I. PROTOASCI, without ascogenic hyphae. This group includes the 

 yeasts, which reproduce vegetatively by budding: 65 



65 A detailed study of the classification of yeasts and yeast-like fungi is given 

 by Guilliermond — Tanner. The Yeasts; by Anderson, H. W. Yeast-like fungi 

 of the human intestinal tract. Jour. Inf. Dis., 21: 341-381. 1917; Kohl, F. G. 

 Die Hefepilze. 1908. 



PLATE XIV 



Soil Fungi — Ascomycetes and Hyphomycetes 



94. Chaelomium olivaceum: A, perithecium, X 40; B, mature and immature 

 asci, X 160; C, ascospores, X 360 (from Jensen). 



95. Trichodermalignorum (from Jensen). 



96. Trichoderma koningi: a, hyphae with conidiophores, X 56; b-c, conidio- 

 phores with sterigmata; e, conidia, X 250 (from Goddard). 



97. Sporotrichum poae (from Schwartze). 



98. Acrostalagmus cinnabarinus: a-b, hyphae bearing conidiophores X 56; 

 c, conidiophore with sterigmata; d, conidia, X 250 (from Goddard). 



99. Monilia koningi: b, conidial fructification, X 56; d, same, X 100;/, sterig- 

 mata, X 250 (from Goddard). 



100. Cladosporium herbarum: a, portion of colony grown in a hanging drop, 

 showing mode of branching; b, part of the same to show arrangement of spores, 

 X270 (from Dale). 



101. Fusarium oxysporum: showing conidia {A, B, C, D), chamydospores 

 (E, F, I) and conidiophores (G, H, J) (from Sherbakoff). 



102. Typical green Penicillium, Pen. chrysogenum: c, d, branching of conidial 

 fructification, X 600; k, j, m, sketches of conidial fructifications, X 90 (from 

 Thorn). 



103. Penicillium purpurogenum: b, typically verticilliate branching at the apex 

 of the conidiophore; e, conidia bearing cell or sterigmae; g, diagrammatic repre- 

 sentation of the entire conidial apparatus (from Thom). 



104. Penicillium, soil series: colonies pale green, velvety at border, but more or 

 less floccose in center with under side of mycelium rose to dark-red, conidia 

 becoming glubose, 2 to 3^ in diameter (from Thom). 



105. Asp. terreus: a, semidiagrammatic sketch of vesicle and sterigmata: b, c, d, 

 primary and secondary sterigmata, X 1000; e, conidia, X 1000;/, diagram of stalk 

 and base of calyptrate conidial mass (from Thom and Church). 



106. Asp. nidulans: a, diagrammatic section of vesicle with two sterigmata; b, c, 

 primary and secondary sterigmata, X 1000; d, conidia X 1000; e, f, g, h, j, 

 diagrams of stalks and heads; k, perithecium surrounded by sterile hyphae; 

 m, group of ascospores (from Thom and Church). 



107. Allernaria humicola, showing a portion of branching chains of spores, X 

 150 (from Dale). 



108. Cephalothecium roseum, showing conidiophore and conidia (from 

 Schwartze). 



109. Botrytis vulgaris (from Schwartze). 



110. Dematium: a, showing intercalary dark cells; b, Torula-like type showing 

 terminaldark cells on lateral branches, X 270 (from Dale). 



