Contributions to the Flora of Long Island, N. Y. 
Second Paper 
WILLIAM C. FERGUSON 
INTRODUCTORY 
The writer became interested in Botany in 1917. At the 
end of the season of 1918 he had collected 753 herbarium sheets 
comprising 370 species. At the end of 1923, 8800 herbarium 
sheets comprising 1345 species of Long Island plants, all found 
and collected by himself, with the exception of 15 to 26 sheets. 
1080 native species and 264 introduced. 
At the close of the season of 1921 the writer published a list 
of the plants he had found that seemed of most interest entitled: 
Some Interesting Plants from Long Island, by William C. Fergu- 
son. Torreya 22: 43-49. May-June, 1922. 
The present paper (the 2d) gives a list of the more interesting 
plants the writer has found on Long Island since the first publi- 
cation, but includes also some of earlier date, goes more into 
details as to locality, in some cases describes plants more elabor- 
ately and offers some opinions, but with the diffidence that comes 
through a realization of but few years’ field experience. 
The writer gratefully and with pleasure acknowledges the 
kind assistance of other workers who have kindlv reviewed his 
plants. 
Mrs. Agnes Chase—All grasses. 
Dr. N. L. Britton—All sedges except Carex. 
Mr. K. K. Mackenzie—Carex. 
Professor M. L. Fernald, Dr. Witmer Stone, Dr. P. A. Ryd- 
berg, Dr. J. K. Small, Mr. Bayard Long, Mr. Eugene P. Bicknell, 
Mr. Paul C. Standley, Mr. F. V. Coville. Dr. Ezra Brainerd, 
Dr. H. M. Denslow, Dr. Edward S. Burgess, Dr. F. W. Pennell, 
Mr. Percy Wilson, Mr. Norman Taylor, and others have kindly 
reviewed plants when there was doubt about identity. Such 
progress as the writer has made is largely due to kind assistance 
from the above experienced botanists. 
The views of many authorities both from the literature and 
from letters to the author are freely quoted. The names of the 
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