Fungous Flora of the Soil 



495 



near the margin are aerial as well as immersed and show a distinct yellow 

 tint. Mycelium branched, septate, with numerous fertile branches bear- 

 ing a single spore at the apex, 2-4.5^1 thick; conidio- 

 phores varying from scarcely none to a length of 30/1, 

 width 2-3. 5M, ascending or erect; conidia uniseptate, 

 upper cell dark brown, smooth, thick-walled, globose, 

 12-1 Sfi m diameter, lower cell hyaline to slightly 

 colored, smooth, hemispherical, 8-10 by g-i2fx. Inter- 

 calary cells are often formed. Variations in which the 

 lower cell is not cut off, and again when a second small ^ 

 cell is formed, occur in culture. All conidia may ~" 

 probably be considered as chlamydospores. 



Hab. Growing on old cornstalks, Preston, Ohio, 

 Morgan; a very common form in soil. Isolated 

 repeatedly during fall, winter, and summer from 

 cultivated soil, Cornell University, Ithaca, N. Y., by 

 the writer. Plant pathology herbariiim No. 5,923. 



Fig. 129. — My co- 

 gone nigra (Mor- 

 gan). A,chlamy- 

 dospore, x 236.6; 

 B, conidiophores 

 and conidia, x 

 236.6; C, germi- 

 nating conidia, x 

 236.6 



Dematiaceae 



Tonila No. 7 Hansen. Kohl, F. G., Die Hefepilze, 

 297. 1908. 



In wort, this species produces i vol. per cent alcohol, does not invert cane 

 sugar. In yeast water containing 1 5 per cent dextrose, it produces 5.3 vol. per 

 cent alcohol. The temperatiire limits of growth are 0.5° C. and 38-39° C. 



Hab. Found in soil beneath a grape vine, Hansen. Kohl, 1. c. 



Torula lucifuga Cud., Arch. Neerl. Sci. Nat. ser. 2,7: 294. pi. 36, figs. 1-4. 

 1902; Nederl. Kruidk. Arch. ser. 3, 2: 916; Cat. Rais. Pays-Bas, 504. 

 1904. Sacc. Syll. Fung. 18: 566. 1906. Lindau, Rab. Krypt. Flora 

 Abt. 8, i: 592. 1907. 



Colonies orbicular, at first straw-colored, later with dark tints of many 

 co'ors above (spotted), below olivaceous to black; vegetative hyphas 

 creeping, hyaline, nonseptate, variously fiexuose and curved, branched, 

 submerged in media, at length with single, later with two or more closely 

 lying, septa, which form the conidial chains; conidial chains soon becoming 

 dark-colored; conidia globose, ellipsoidal, or oblong, dark- or light-colored, 

 contents full of small vacuoles, 10-22 by 8-io/x. 



Hab. Isolated from humous soil from woods called Spanderswoud 

 near Bussum, Holland, September, 190 1, Koning. 



Stachybotrys atra Corda, Icon. Fung. 1:21. fig. zjS B. 1837; Anleit., 

 64. pi. B 18, figs. j-8. 1842. Sacc. Syll. Fung. 4: 269. 18S6. De 

 Wild, et Dur., Prodr. Fl. Belg. 2: 329. 1898. Lindau, Rab. Krypt. 

 Flora Abt. 8, i: 628. 1904-1907. 



