An additional lot of ferns received on loan from the Berlin Botanical Museum includes two new species, which are described herewith. One of these, represented by an identical specimen in the U. S. National Herbarium, had ...

In an earlier paper, this author dealt briefly with an interesting collection of ferns obtained by Dr. W. L. Abbott in the northeastern part of the Dominican Republic from November, 1920, to May, 1921, describing a new ...

In November, 1920, Dr. W. L. Abbott revisited the Dominican Republic, spending the period to May, 1921, in an investigation of the natural history of the Samana Peninsula and of the region lying between Sanchez (at the ...