XXXII. 



exceedingly variable. This species probably includes too much 



under one name. — P. depauperatum, Muhl.; quite common; Stis- 



sing Mt. and also frequent elsewhere. — P. Crus-galli, L. ; very 



common. 

 Setaria glauca, Beauv. ; very common. — S. viridis, Beauv. ; rather 



rare, but found in some cultivated places. 

 Andropogon furcatus, Muhl. ; rather common ; W. base of Snake 



Hill; Risedorf Hill; Attlebury Hill, etc. — A. scoparius, Michx.; 



common in dry sterile soil. — A. Virginicus, L. ; on knolls near 



ponds, Mt. Riga. 

 Sorghum nutans, Gray ; common ; with Solidago rigiJa, E. base of 



Mt. Ararat, etc. 



I am entirely indebted for the accuracy of the foregoing list of 

 Gramineae to my old and esteemed friend, Dr. Geo. Thurber of 

 Passaic, N. J., who has repeatedly examined and corrected suites 

 of Grasses from this region. 



