644 



MEDICAL MYCOLOGY 



Colonies never green, with aerial hyphae partly at least in trailing and 

 anastomosing ropes or fascicles (funiculose) ; conidiophores very short or al- 

 most wanting, commonly borne along the funiculose hyphae; conidial ap- 

 paratus as in PenicilUum, consisting of varying aggregations of branches and 

 phialides, at times reduced to single phialides scattered along aerial hyphae ; 

 phialides tapering gradually from a basal tubular section or even the base 

 itself toward a conidiiferous apex, or narrowly tubular without tapering, ab- 

 jointing conidia from the apex ; conidia more or less pointed at the apex and 

 truncate at the base with more or less thickened basal ring surrounding the 

 basal germinal pore, with walls usually thickened and often variously marked 

 or roughened (Fig. 104). 



Sopp describes perithecia as showing small but definite ostioles. The 

 species appear as agents of decomposition after the usual green Penicillia 

 have ceased to be active ; i.e., in the later stages of decay. 



Fig-. 104. — Scopulariopsis brevicaulis (Sacc.) Bainier. (After Thorn 1910.) 



While there is little real evidence that PenicilUum is ever pathogenic, there 

 is plenty of evidence for several species of Scopulariopsis, at least as invaders 

 of the nails and secondary invaders, if not the primary cause of gummata and 

 other lesions. 



Key to Pathogenic Species 



Perithecia present after 3 weeks, black, 250/;i in diameter, asci evanescent, 8-spored, 10-12 x 



8fi; ascospores brown planoconvex, 6-7 x 3-3.5fi. S. cinereus. 

 Perithecia perhaps developing in time, but only rudiments observed, conidia smooth, color- 

 less, 3-4 X 1.5-2M. S. Blochi. 

 Perithecia usually absent (not yet observed). 

 Conidia smooth. 



Conidia yellow to tawny, 5-7/i. 8. rufulus. 



Conidia hazel (avellaneous) 6-8,^. S. Koningi. 

 Conidia brown (2-5/i). 



Phialides in groups. S. sehnsuohta. 



Phialides single. S. Bertaoini. 



