MICROSPHMRA ALNI OR M. QUERCINA. 71 



1. The abundant conidiospores, separated and free, owing to 

 the manipulation. 



a. Their shape and color. 



b. The cell-wall and contents. 



2. The branches bearing conidiospores (the conidiophores) 

 which leave the mycelial filaments at right angles, and 

 are provided with cross-partitions at regular intervals, 

 and may yet have some fully formed spores attached. 



3. Draw some spores, a conidiophore, and the hypha from 

 which it arises. 



III. THE ASCOCARPS. 



Prepare a slide as before, but from mature material, and 

 examine the ascocarps, observing: 



1. The shape and color. 



2. The reticulations of the surface. 



3. The appendages extending out from the sides. Observe: 



a. The number. 



b. The color. 



c. The length compared with the diameter of the asco- 

 carps. 



d. The cross-partitions, if any. 



e. The manner of branching, and the number of divisions 

 in each. 



4. Draw an ascocarp with its appendages. By pressing on 

 the cover-glass with a scalpel-handle or dissecting-needle, 

 crush the ascocarps while watching them through the 

 microscope, and observe: 



5. The escape of sacs (asci) containing spores. Observe: 



a. The number from each ascocarp. 



b. The general shape. 



c. The short pedicel or beak by which they were attached. 



d. The thin part of the wall at the apex, not to be seen 

 in every case. 



