- pa Na Tol aii toi a.) oot Le, sae Ne eer ead RMD Oo sn aaa aE oe ahs Ci the | 
Geta ae ~ lege cert ga : . A 
ie ial 
THE FUNGI 393 
berger’ cites the presence of perithecia in this organism which 
are nut-brown, globular, 250 to 350u in diameter, and inclose 
Fic. 292.—Aspergillus niger showing conidiophores and conidiospores formation 
with stages in germination of spores. (Harshberger, after Henri Coupin.) 
oval, thin-skinned asci with eight, red, lenticular ascospores each 
of which has a diameter of 4 to 5yu. 
Aspergillus niger develops dark brown mycelial masses in which 
are to be noted tall conidiophores terminating in large, black, 
1 “Mycology and Plant Pathology,” p. 147. 
