Al. J. Webber — 
PROTOPHYTA. 
1. RETICULARIACEZ. 
. RETICULARIA Bull. 
1. R.LycoperDON Bull. On decaying trunks of trees. Pine Ridge, 
Dawes Co., July (Webber). 
2. CLATHROPTYCHIACE. 
. ENTERIDIUM Ebr. 
2. E. RozeaNuM (Rost.) Wingate. (Reticularia [?] rozeana Rost.). 
Lincoln (Webber). 
3. STEMONITACE. 
. STEMONITIS Gled. 
3. S. WEBBERI Rex. (N. sp. in lit. Published in Pro. Acad. Nat. 
Sci. of Phila., 1891). On old stump, Lincoln, September (Webber) . 
4. PHYSARACEZ. 
. PHYSARUM Pers. 
4. P. yivipum Rost. (Spumaria licheniformis Schw.) On bark of 
tree, Lincoln (Webber). 
5. P. perersi B. and C. On bark of old Cottonwood and Boxelder 
trees, Weeping Water (Williams). 
5. BACTERIACEZ. 
. BACILLUS Cohn. 
6. B. sorGur Burrill. On leaves and culms of Bushy blue stem 
(Andropogon nutans), Lincoln; Johnson grass (Andropogon sorghum 
var. halepensis), Howard Co.; and on numerous varieties of 
Sorghum grown on the Nebraska Experimental Farm at Lincoln. 
Quite destructive, forming large irregular purple patches 
(Webber). 
6. NOSTOCACE. 
. GLGQOTRICHIA Ag. 
7. G. NATANS Thur. Floating in stagnant water. Greenwood, July 
(Williams). Minden, attached to Nitella stems (Bessey). 
. LYNGBYA Ag. and Thur. 
8. L. cincinNaTta Kg. Minden. In material collected by Dr. Hape- 
man (Bessey). 
. CYLINDROSPERMUM Kg. 
9. C. comatuM Wood. Minden (Hapeman). 
