538 MEDICAL MYCOLOGY 



Colony light brovvu, center plane, powdery, with radial furrows surrounded by 

 a zone of velvety hills, the higher next the center and lower near the 

 margin; on conservation agar central disc elevated and deeply umbili- 

 cate, silky; on potato, velvet scarcely visible, medium darkening; on 

 man, probably contracted from Bovidae, Belgium. 



M. villosum. 

 Colony brownish, central umbo surrounded by a powdery zone, sometimes marked 

 by concentric circles ; on potato, growth fast, pale brown, ochraceous with 

 short, powdery velvet; closterospores, thin-walled, 40-54 x 12-15^, 4-6- 

 celled ; nodular organs present ; on man, Argentina. 



M. pulvum. 

 Disc glabrous, moist on some media; closterospores thick-walled; reddish with a thin 

 white velvet on potato. 

 Colony with chamois or yellowish tobacco-colored disc and a white margin; 

 colony flat without folding or elevation, on cat and man, widespread. 



M. felineum. 

 Colony similar but the lighter colored disc is slightly elevated, glabrous and 

 powdery, becoming umbilicate, surrounded by a dense woolly zone; 

 margin of immersed rays from which arises a short grayish velvet ; 

 closterospores 50-75 x 15-25/u, 5-12-celled spines long, on dog and man, 

 widespread. M. oanis. 



Colony bright yellow or reddish yellow. 



Colony reddish yellow, slight central depression and 4-5 radial furrows which disap- 

 pear; Brazil. M. flavescens. 

 Colony bright yellow, flat, dull, surface granular with marginal rays; pleomorphic 

 colony white with concentric yellowish furrows, margins wavy; on potato 

 dull whitish surface with a flatter marginal zone; sycosis, Germany. 



M. xanthodes. 

 Colony grayish or whitish, rarely with a slight orange or greenish tinge. 

 Colony gray, flat, zonate; on potato, brownish red; on man, Holland. 



M. lanuginosum. 

 Colony white, center a polygonal umbilicus with a small umbo in the center, surface 

 lanuginous, finally with a slight orange or greenish tinge; on potato, little 

 chromogenesis ; on man, Sardinia. M. tomentosum. 



Colony white, punctiform umbo surrounded by a disc of short, thick velvet divided into 

 4 sectors by radial furrows, broad margin of fine silky velvet ; closterospores 

 60 X 20ix, up to 10-celled; on man. New York. 



M. piobescens. 

 Colony white, center elevated, woolly disc without furrows; on man, Sicily. 



M. felineum var. mveum. 

 Colony some shade of yellow or orange; closterospores and aleurospores rare or absent; 

 lesions intermediate between Neomicrospormn and Eumiorosporwm, usually with 

 some inflammation; not attacking domestic animals, not inoculable, or only 

 with great difficulty, into guinea pig; mostly confined to the yellow race. 



KAMBAYASHIA n. Subgenus. 

 Colony citron yellow to yellowish brown, darkening in age, surface smooth, moist, 

 waxy, not folded, marginal rays as in E. mentagrophytes, pleomorphic, 

 Japan. M. aureum. 



Colony deep reddish yellow, sometimes paler, surface folded in center, becoming 

 vermiculate with lanceolate rays, pleomorphic, Japan. 



M. ferrugimeurn. 

 Colony downy, divided by folds into 8 sectors, deep yellowish brown almost red; 

 remaining grayish on Sabouraud conservation agar; no pleomorphism; Japa- 

 nese in Holland. M. orientaXe. 



