STATE GEOLOGIST. 



315- 



/ 



Barnyard-Grass. 



Green Foxtail, 

 Bottle-Grass. 



Bur-Grass. 



Beard-Grass. 



Broom-Corn. 



Horsetail, 

 Scouring Rush. 



Meadow Horse- 

 tail. 



Wood Horsetail. 



Swamp Horse- 

 tail. 



Shave-Grass. 



Scouring Rush. 

 Scouring Rush. 



Polypody. 



Panicum dichotomum, L. (P. nitidum and pubes- 

 cens — W.) 



Grand Traverse Co.; S. Mich. (Wright). 



Panicum Crus-galli, L. 



Ann Arhor. 



Panicum nervosum, Muhl. 



S. Mich. (Wright). [A synonym?] 



Setaria glauca, Beauv. 



Ann Arhor, 



Setaria viridis, Beauv. 



Ann Arbor; Emmet Co., growing in fields with the following. 



Setaria Italica, Kunth. 



Emmet Co. , cultivated hy the Indians as Millet. 



Cenchrus tribuloides, L. (0. echinaius, var. tribu- 

 loides — W.) 



S. W. (Wright). 



Andropogon furcatus, Muhl. 



S. Mich. (Wright). 



Andropogon scoparius, Michx. 



Antrim Co., common; S. E. and S. W. (Wright). 



Andropogon "Virginiciis, L. 



S. Mich. (Wright). 



Sorghum nutans, Gray. (Andropogon nutans 1 - W.) 



S. Mich. (Univ. Herh.) 



EQUISETACE^). 



Equisetum arvense, L. 



Ann Arbor; Bruco Mine, Ca. ; Drummond's I., abundant, in sandy soil. 



Equisetum pratense, Ehrh. 



Ann Arbor; Pino Lake, Emmet Co. 



Equisetum sylvaticum, L. 



Drummond's I. 



Equisetum limosum, L. 



Ann Arbor ; S. E. (Wright). 



Equisetum hyemale, L. 



Ann Arbor- Drummond's I. , very abundant in sandy soil; Branch Lako, 

 Antrim Co. , very abundant, growing in the marshy margin of the- 

 river near its mouth. 



Equisetum variegatum, Schleicher. 



Drummond's I. ; S. E. (Dniv. Herb). 



Equisetum scirpoides, Michx. 



Shore of Lake Michigan, Emmet Co. " 

 FILICES. 



Polypodium vulgare, L. 



Drummond's I. 



