242 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.51. 



2. The Scudder collection. — This collection was made by the late 

 Samuel H. Scudder, of Cambridge, Massachusetts, under the aus- 

 pices of the United States Geological and Geographical Survey of 

 the Territories, of which Dr. F. V. Hayden was the dhector. This 

 collection of plants was made as an incident in collecting fossil in- 

 sects, in which group Scudder was the well-known authority. Al- 

 though comprising only about 150 specimens, it is made up of care- 

 fully selected material and contains a number of undescribed forms 

 as well as some veiy fine examples of previously known species. It 

 had remained packed in the original boxes in the National Museum 

 until the occupancy of the new museum building in 1911. 



3. The Lacoe collection. — This is a collection of about 200 speci- 

 mens that was acquired by the late R. D. Lacoe, of Pittston, Penn- 

 sylvania, and by him donated to the United States National Museum 

 in 1893, together with his iimnense collection of Paleozoic material. 

 These specimens are in the main exceptionally well preserved and 

 were studied and named by Leo Lesquereux ^ in his well known ac- 

 count of the Florissant flora. As many of these type-specimens were 

 apparently received by Lesquereux too late to be figured in his work, 

 they are figured in the present paper, either under the names given 

 them by Lesquereux, or under species that subsequent study has 

 shown thom to belong with. 



4. Old National Museum collections. — This material, which is 

 comprised in several unit trays, represents collections that have been 

 acquired in various ways and at different times by the United States 

 National Museum, but which has remained unstudied. It is made 

 up mainly of well-known species, though one or two apparently new 

 forms were detected. 



In addition to the unnamed material, the entire United States 

 National Museum collections of Florissant material has been re- 

 studied and named in accordance with the later understanding of 

 this flora. This embraces the original material obtained by the 

 Hayden survey, and which served in large part as the basis for Les- 

 quereux's work as published in his Tertiary Flora and Cretaceous 

 and Tertiary Floras. A large portion, if not indeed all, of the mate- 

 rial used in the preparation of the latter work that is not now in the 

 United States National Museum, is, or should be, in the museum of 

 Princeton University. 



5. Collection of 1913. — This is a small and relatively unimportant 

 collection made in 1913, when Edward W. Berry and the writer 

 spent several days at Florissant. The most valuable part of this 

 collection is a series of specimens of fossil wood from the well-known 

 "fossil forest," located about 2 miles west of the town of Florissant. 

 No fossil wood from this locality was previously contained in the 



' Lesquereux, Leo, Kept. U. S. Geol. Surv. Terr., vol. 8 (Cretaceous and Tertiary Floras), 1883. 



