Publisher's Synopsis
Excerpt from Proceedings of the American Academy of Arts and Sciences, Vol. 42: From May, 1906, to May, 1907
The writer would here express his sincere thanks to all those in charge of these herbaria for their cordial hospitality, uniform courtesy, and valuable aid during his researches. He is also indebted to Messrs. Oakes Ames and A. A. Eaton for several excellent photographs of type-specimens at Paris, to Mr. H. Hua for a critical comparison of a Peruvian Piqueria in the herbarium of J ussieu, to Miss Mary A. Day, Librarian of the Gray Herbarium, for bibliographical assistance, and to Mr. F. V. Coville and Dr. J. N. Rose for the loan of the material of Piqueria belonging to the United States National Museum.
About four hundred photographs of types were taken in the Euro pean herbaria, some important exchanges effected, and many notes and sketches prepared, which it is hoped may form an accurate basis for considerable work on the group concerned. In the present paper only a small part of the results of the summer's investigation can be pre sented, but as any complete or monographic treatment of so large a group must be delayed for a considerable time, it seems best to record such identities and synonymy as can be at once stated with definite ness, in order that certain traditional errors may not become more fixed by longer usage. The nomenclature adopted is that recommended by the international congress at Vienna.
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