60 
Ohio Biological Survey 
Synechoblastiis pycnocarpus. Ascogonia on young lobes, 40 to 215 
mic. below the surface, horizontal diameter 20 to 42 mic., vertical diam¬ 
eter 40 to 215 mic., 10- to 18-or more-celled, cells 5 to 17 mic. long and 
3 to 8 mic. wide; trichogynes extending 15 to 30 mic. above the surface, 
where branched or unbranched, 85 to 265 mic. long, cells 7 to 59 mic. 
long and 3 to 7 mic. wide, the two distal cells much longer than the 
others; spermagonia occurring with the archicarps, horizontal diameter 
55 to 200 mic., vertical diameter 55 to 205 mic.; basidia becoming 20-or 
more-celled, cells 3.5 to 8 mic. long and 3 to 6 mic. wide; spermatia 2 to 
4 mic. long and 0.5 to 1 mic. wide, some seen as low as the fifth cell from 
the tip of the basidium. See Figs. 18 and 24. 
Syncchoblasius ryssolctis. Ascogonia 46 to 95 mic. below the sur¬ 
face, horizontal diameter 19 to 28 mic., vertical diameter 17 to 31 mic., 
7- to 15-celled, cells 5 to 9 mic. long and 4 to 7 mic. wide; trichogynes 
not seen; horizontal diameter of spermagonia 55 to 155 mic., vertical 
diameter 65 to 125 mic.; basidia 7- to 12-or more-celled, cells 4 to 6 mic. 
long and 2 to 5 mic. wide; spermatia 2 to 3 mic. long and 1 mic. wide. 
Syncchoblastus flaccidus. Ascogonia 50 to 60 mic. below the sur¬ 
face, horizontal diameter 14 to 22 mic., vertical diameter 12 to 20 mic., 
many-celled, cells 6 to 7 mic. long and 4 to 5 mic. wide; trichogynes 
extending about 8 mic. above the surface, unbranched, 56 to 65 mic. long, 
cells 10 to 11 mic. long and 4 to 5 mic. wide; spermagonia submarginal 
on young lobes, horizontal diameter 150 to 165 mic., vertical diameter 
105 to 150 mic., basidia 6- to 15-celled, cells 2 to 5 mic. long and 3 to 5 
mic. wide; spermatia 2 to 3 mic. long and 0.7 to 1 mic. wide. See Fig. 
17. 
Synechoblastiis nigrcsccns. Ascogonia 34 to 54 mic. below the sur¬ 
face, horizontal diameter 15 to 26 mic., vertical diameter 15 to 17 mic., 
8- to 10-or more-celled, cells 6 to 8 mic. long and 3 to 4 mic. wide; trich¬ 
ogynes extending to and above the surface, 50 to 70 mic. long, cells 8 to 
10 mic. long and 3 to 3.5 mic. wide; horizontal diameter of spermagonia 
65 to 230 mic., vertical diameter 56 to 190 mic.; basidia 4-to 12-or more- 
celled, cells 3 to 5 mic. long and the same in width; spermatia 2 to 4 mic. 
long and 1 to 1.5 mic. wide. 
Syncchoblastus ohioensis, Ascogonia 90 to 225 mic. below the sur¬ 
face, horizontal diameter 16 to 37 mic., vertical diameter 16 to 30 mic., 
7- to many-celled, cells 6 to 8 mic. long and 5 to 6 mic. wide; trichogynes 
passing directly or indirectly to the surface and 20 to 40 mic. above. 
