15 
In some few cases the outlines of the guard cells are visible in 
this species; one stoma was seen which appeared superficial, all 
the rest on the same capsule were immersed. Venturi in the 
Muscologia Gallica says of O. psilocarpum, that it is a singular 
species, which unites the characters and smooth capsule of QO. 
Jetocarpum, with the section having immersed stomata. In fact it 
is with O. striatum (O. leiocarpum) that it is liable to be con- 
founded, but it may readily be distinguished by the absence of the 
broad erose cilia. 
Studies in the Botany of the Southeastern United States—I. 
By Joun K. SMALL. 
(PLATES 170, 171.) 
Having taken up the flora of the Southeastern United States 
as a special field of study in this and the papers to follow, entitled 
Studies in the Botany of the Southeastern United States,1 intend 
to put on record facts concerning the plants of that very interesting 
region not yet made known, with a view to more extended and 
connected work when the field has been better explored. The 
Papers will include, for the most part, descriptions of and notes on 
new species and additions to our flora; also remarks on native 
and introduced plants, facts concerning geographical and altitudi- 
nal distribution, and the relations between the geological forma- 
tions and certain specics. This latter side of botany, much 
neglected in the past, is exhibited in a striking manner in portions 
of the Southern States. The sources from which the following — 
contributions are derived are my own collections in the South and — es 
the vast amount of material preserved in the Columbia College fe 
Herbarium, which includes, besides many types and specimens of 
the early Southern botanists, the very valuable herbarium of Dr. ee 
Chapman, and these sources will be augmented by the collections 
of local botanists who have promised to codperate with me. 
ASPLENIUM BrabLeyi D. C. Eaton, Bull. Torr. Club, 6: 11 (1873). o 
_ Contrary to its usual habitat, which is perpendicular or over- 
hanging and rather damp, disintegrating cliffs, Asplenium 
