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whose bracts are not overlapping each other and are much 
narrower and shorter, 3-4 mm. long and generally narrower than 
the small, 2 mm. long, broadly winged achenes. I have compared 
the American form with the European and cannot find any char- 
acter by which to separate it. It grows from Texas, Kansas, 
Nebraska to Arizona and Washington (?). 
C. villosum, described above, which resembles C. hyssopifolium in 
the spikes and the low branching, and C. mitidum in the size of 
bracts and achenes and narrow leaves, but differs from both by the 
lack of the wing-margin and by the longer pubescence. 
New or noteworthy American Grasses.—VI, 
By Gero. V. Nasu. 
PASPALUM BIFIDUM (A. Bertol.) 
Panicum Floridanum Trin. Mem. Acad. St. Petersb. (VI.) 3: Pt. 
2,248. 1834. Not Paspalum Floridanum Mx. 1803. 
Panicum bifidum A. Bertol. in Mem. Acad. Sci. Bolog. 2: 598. 
pl. gt. f. 2,é-h. 850. 
Panicum Alabamense Trin.; Steud. Syn. Pl. Gram. 64. 1855. 
Paspalum racemulosum Nutt.; Chapm. Fl. S. St. 571. 1860. 
Paspalum interruptum Wood, Classbook, 783. 1861. 
The above seems to be the oldest available name for this 
plant, the Panicum Floridanum of Trinius being excluded by the 
Paspalum of the same name previously published by Michaux. 
The excellent plate and description of Bertoloni, and the fact that 
his plant was from Alabama, leaves little to be desired in its iden- _ 
tification. I have been unable to ascertain where Dr. Chapman 
secured the name of P. vacemulosum Nutt. The publication by 
Nuttall of such a name I have failed to discover up to the present. — 
The only name resembling that accredited to Nuttall by Chapman 
is P. vacemosum, published by the former in the Transactions of 
the American Philosophical Society ( (II.) 5: 145. 1837), but 
this is antedated by that of Lamarck. Nuttall secured his plant 
in southeastern Indian Territory, and just what he had I am as 
yet unable to determine. From a comparison of our plant with | 
his description, I think it will become apparent at once that what- _ 
ever plant he did have, it was some other than that which has — 
