26 o 
PHARMACEUTICAL BOTANY 
Penicillium brevicaule grows on old moist paper and has been used 
to detect the presence of arsenic, for when grown in media contain¬ 
ing this element, it develops the compound, diethylarsine. It is 
yellowish-brown in color and its conidia are rough and spiny. 
Fig. 133. — Penicillium Camemberti. a, Conidiophore with common type of 
branching with conidiospores; (6), a common less-branched form; c, d,f, diagrams 
of large fructifications; g, i, j, germinating conidiospores. ( From Bull. 82, Bureau 
of Animal Industry, also After Thom.) 
Penicillium expansum is often found on decaying apples where it 
produces brownish coremia. 
Aspergillus herbariorum. —This green mold also named Aspergillus 
glaucus and Eurotium Aspergillus glaucus is frequently found on 
