68 
Ohio Biological Survey 
EXPLANATION OF PLATE V. 
Fig. 14. Internal reproductive organs in a member of the Colleinaceae collected at 
Fayette, Iowa. Parts of two ascogonia at the left and two trichogynes 
passing toward a group of male reproductive bodies at the right, x 1,000. 
h'ig. 15. Sixteen trichogynes of CoUeina seen projecting above the surface 
of the algal-host colony within one field of the microscope, x 580. 
Fig. 16. A single archicarp of Collema piilposiini from the same material from 
which Fig. 15 was taken, x 1,000. 
Fig. 17. The tip of a trichogyne of SynccJioblastus flaccidiis branched more than 
usual. X 580. 
Fig. 18. The coiled ascogonium of Synechoblastus pycnocarpiis, with a portion of 
the trichogyne above and a portion of the supporting hypha below, x 580. 
Note how this differs in form of coil and form of cells from the archicarp 
of Collema piilposum shown in Fig. 16. 
Fig. 19. The coiled ascogonium and portions of the supporting hypha and the 
trichogyne of Leptogiiim chloromchim for comparison with similar struc¬ 
tures from other members of the Colleinaceae shown in Figs. 14, 16 and 
18. X 580. 
