142 BETTS =} THE FUNGI OF THE BEE-HIVE. 
produced in cultures; but in one culture (on honey agar) oidia were 
developed. The vegetation was sparse, and of a pale salmon colour ; 
the oidia are globose or subglobose, 5 to 6.5 u. The oidium- 
hyphae fall to pieces very easily when immersed in weak spirit (Fig. 
10). It is probable that there is a cenidial form, but this remains 
to be verified. 
OC 
© 
Fig. 9.—Gymnoascus ruber. Asci and ascospores. X I,400, 
Fig. 10.—Gymnoascus ruber. Oidium-hyphae and oidia, x 1,400. 
The red colour of the hyphae is destroyed by immersion in 
sulphuric and hydrochloric acids; this effect is also produced by 
caustic potash solution on the application of heat. 
sulphuric acid destroys the hyphae, and renders the asci 
very transparent. 
Heating in 
and spores 
