50 
and knowledge of plants much of the success of the trip is due, 
For a part of the time we had the codperation of Mr. A. A 
Eaton, of the Ames Botanical Laboratory, who paid special 
attention to the collection of the orchids and ferns. I wish to 
thank Professor P. H. Rolfs of the Tropical Laboratory of the 
Department of Agriculture at Miami, who aided our operations 
in many ways and who placed the facilities of the institution of 
which he has charge at our disposal, and also his associates 
us to spend a part of or the whole of each day in the field. 
A little time, especially between the periods of the more ex- 
tended excursions, was spent in the less known parts in the 
vicinity of Miami, but by far the most of our time and energy 
was devoted to the investigation of the flora of more distant and 
wholly enw aus sections. 
of about fifty miles was made to the north in 
order to examine the flora of the country immediately back of 
the coast. Our route lay through the inland water way. We 
were thus able to make collection of plants on the narrow sandy 
island-like peninsulas on the eastern side and the low lands, pine 
lands and hammocks on the western side. In addition to find- 
g rare species some of which had been collected only once 
heretofore, and extending the geographic ranges of other plants, 
we discovered several species not previously known to occur in 
the United States, and two undescribed woody aba the one a 
small shrub, the other a larger shrub or a small t 
our conspicuously differentiated pat formation impressed 
themselves upon one during this excursion: (1) The sand ridges 
near the coast supported a growth of gnalled par and trees 
together with two cactuses, a spreading Opuntia and a Cereus 
with branched and interlaced stems often over twenty-five feet in 
length, to the exclusion of nearly all herbaceous vegetation ; (2) 
h d th hich 
woody vegetation ; (3) the characteristic pinelands,* and (4) the 
hammocks. * , 
* See Journal of the New York Botanical Garden, 3: 32. 1902. 
