THE GENUS ASPERGILLUS. 



named " Lepidophyton " at first, and is chiefly of medical interest, 

 though worthy of note as parasitic on the human skin. Whether 

 the species plays a more comprehensive part in that disease 

 (formerly known as " Trichophytis") remains to be ascertained ; 

 but at any rate the fungus is a true Aspergillus, and indeed, 

 according to WEIIMER (XIX.), a well-defined new species, charac- 

 terised by large hairy conidia (up to 12 fj, in diameter), resembling 

 those of A. glaucus (see Fig. 173), growing on conidiophores 



FIG. 174. Aspcrgillns clavatus. 



Conidiophores in various stages of development, with elongated globule and simple 

 steriginata, shown iu optical section at c, with incipient conidia at e. A slightly 

 magnified herbage is seen at /. Couidia (y), sterigma (/), section of stem (/). 

 Approx. magii. of a and b, 30 ; of c and d 60 ; of e, 120 ; of g and h, 1000. 

 (.tj'ttr Walnncr.) 



which at times are like those of A. glaucus, and at others those 

 of A . fumigatus. 



Aspergillus clavatus, Desmazieres, a species N of ten found on 

 vegetables, and, according to P. LINDNER (XXXIII.), more 

 especially on green malt, on which it forms a pure green (not 

 yellow green !) herbage, is otherwise devoid of practical import- 

 ance. It is distinguished by the peculiar elongated globule 

 VOL. ii : FT. 2 X 



