cnrProGAMs 



187 



follow a. spore to its destination and observe its develop- 

 ment, we should find that after soaking np some of the 

 juices of the bread it germinates by putting out a trans- 

 parent hyplia (Fig. 306). The hyplia grows by further 

 absorption of food matter, increases rapidly in length. 



30.3. Bread Mold : S, a sporaugiam ; /', rootlike organs. 



branches repeatetUy, and thus ultimately develops into a 

 complex mycelium running over the bread and sending 

 hyplue into tlie interior. All portions of this mycelium 

 may be in communication internally, for there are no 

 cross walls, or septa. In this respect Rhizopus is like 

 Vaucheria. 



446. Reproduction. — Special erect filaments are soon 

 sent up, at the summits of which white globular sporangia 



A p. ' 



y04. A, young sporangium ; B, section of a mature 30.5. A spore of Bread 

 sporangium ; C sporangium after rupture of Mold, more higli- 



the exterior membrane {w). ly magnified. 



are formed (Figs. -"03, 304). At maturity both turn 

 black. The numerous spores are ovate bodies (Fig. 

 305), covered with cell walls which protect them from 



