4 STUDIES IN THE GENUS ASTER 
tributions, and to the curators of the herbaria to be enumerated, I 3 
desire hereby to make particular acknowledgment, not forgetting — 
the courtesies also received from Dr. George Vasey and Dr. ~ 
Sereno Watson ‘iin the past, and the aid received from Prof. T. C. — 
Porter by consultation with his valuable herbarium before the — 
lamentable fire of 1808. . 
I also owe especial acknowledgment to Dr. Edmund A. Baker 4 
of the British Museum, for comparing in my behalf the Gronovian ~ 
herbarium, to Dr. L. M. Underwood for furnishing similar com- — 
parisons in the Willdenovian Herbarium at Berlin, and to the late — 
Mons. A. Franchet and to the artist Miss Ida L. Miner, for com- 
parisons and drawings from the Michaux herbarium and others in 
the collection of the Jardin des Plantes at Paris. 
I also desire to commend the fidelity and care with which M 
M. E. Baker (Mrs. C. D. Henline) of New York City has executed 
for me the drawings which illustrate fourteen of the Biotian specie 
or varieties. 
Larger herbaria collated include : 
Cambridge, Mass., Herb. Gray, including part of that of Nees, 
and Herb. Klatt. 
Cambridge, Mass., Herb. Walter Deane. 
New York City, Herb. Columbia University, including Herb. — 
Torrey and Herb. Meisner. 
New York City, Herb. N. Y. Botanical Garden, including He 
Gibbes and others, . 
New York City, Herb. N. Y. College of Pharmacy, including 
Herb. Canby. 
New York City, Herb. Torrey Botanical Club. 
Albany, N. Y., Herb. N. Y. State, in charge of Prof. C. H. Pee 
Buffalo, N. Y., Herb. Buffalo Society of Natural History, inclu 
ing Herb. Clinton. 
Philadelphia, Pa., Herb. University of Pennsylvania. 
Philadelphia, Pa., Herb. Philadelphia Botanical Club. 
Philadelphia, Pa., Herb, Academy of Science, including p 
of Schweinitz, Nuttall, Rafinesque. 
: Philadelphia, Pa., Herb. American Philosophical Society, de 
ited with the Academy of Science, including Herb, Muhlenbe 
Herb. Pursh, Herb. Barton, Herb, Lewis and Clarke's exped 
