258 
PHARMACEUTICAL BOTANY 
When a small portion of the mycelium is mounted in 10 per cent, 
alcohol and observed under the high-power objective, it will be noted 
that each hypha has a transparent wall and protoplasmic contents 
and is divided by transverse septa into a number of cells. Each 
cell contains protoplasm, which is differentiated into cytoplasm (cell 
Fig. 13 i.—T hree aerial hyphae showing the characteristic brush-like branching 
and spore formation of Penicillium glaucum. This fungus is a true saprophyte 
and is never found on living fruits or vegetables, a, Conidiophore branching 
above into secondary conidiophores; b, sterigmata; c, conidiospores. ( Schneider .) 
protoplasm) and several nuclei. In the cytoplasm will be seen 
several large clear spaces. These are vacuoles and contain water 
with nutritive substances in solution, called cell sap. Each hypha 
with its branches is clearly distinct from every other one. 
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