299 
have not been able to examine is Elliott's herbarium at Charleston, 
S.C. It isa pity that this valuable collection should be at a place 
and in such condition that it is made nearly inaccessible to the 
botanical world. 
At the suggestion of Dr. J. M. Coulter, I have extended the 
original plan by including in the monograph, the related genera 
Margaranthus, Chamaesaracha ‚and Oryetes. The material used 
for the study of these genera has been more limited, consisting 
only of the collections of United States Department of Agriculture, 
Missouri Botanical Garden, Columbia College, College of Phar- 
macy, and Prof. E. L. Greene. 
The revision includes not only the native and introduced species 
growing in the United States and Canada, but also a few Mexican 
ones, collected in the northern part of the border States, Lower 
California, Sonora, Chihuahua and Coahuila. They may at any 
time be expected to appear within our country. These species 
are: Margaranthus tenuis, Physalis subulata, P. leptophylla, P. has- 
fata and P. microphysa. 
Although most of the herbarium work on Fhysalis and also a 
part of the bibliographical work was done at the University of 
Nebraska, the most important part of the latter, the collation of the 
notes, the final arrangement and the preparation of the manuscript 
has been done at Columbia College, whose botanical library fur- 
nishes much better facilities. The whole work on Margaranthus, 
Chamaesaracha and Oryctes, has also been done at Columbia. 
To give a list of all the books referred to, would be useless, as 
most of them are given in the bibliography under each species. 
The only monographs of real value in existence are those of Nees 
von Esenbeck, in Linnaea, Vol.VI, 1831; of Dunal, in De Candolle’s 
Prodromus, Vol. XIII, part 1, 1852 ; and of Asa Gray, in the Pro- 
ceedings of the American Academy of Arts and Sciences, Vol. 
X, 1875, and in his Synoptical Flora, Vol. II, part 1, 1878. All 
these, however, are defective and incomplete. Many new species 
and forms have been discovered since the time of their publication, 
especially in the West and in Florida. More material has accumu- 
lated, which has made it possible to separate out as good species, 
forms that were imperfectly known to Dr. Gray, as, for instance, 
Physalis lancei folia Nees, P. Carpenteri Riddell, P.arenicola Kearney, 
