296 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 51. 



Plate 14. 

 Sabina linguaefolia (Lesquereux) Cockerell. 



Plate 15. 



Jtiglans magnifica, new species. 



Plate 16. 



Fig. 1. PaZaeo/JO^amog^eton /omsantt, new genus and species. 



2. Alnus, species. 



3. Zizyphus ohtusa Kirchner. 



4. Populus, species. 



Plate 17. 



Fig. 1. Rosa inquirenda, new species. 



2. Juglans Jlorissanti Lesquereux. 



3. Palaeo-potamogelonfioTusanti, new genus and species. 



4. Juglans sepultus Cockerell. 



Plate 18. 

 Populus crassa (Lesquereux) Cockerell. 



Pl.\te 19. 



Fig. 1. Alnus praecor data Cockerell. 



2. Populus micro-tremuloides, new speciea. 



3. Betula deltoides, new species. 



4. Dalbergia coloradensis, new species. 



Plate 20. 



Figs. 1. 2. Myrica drymeja (Lesquereux) Knowlton. [Refigured from Myrica am- 

 minato. linger. Lesquereux, Tertiary flora, 1878, p. 130, pi. 17, figs. 2, 3. 

 3,4. Myrica scottii Lesquereux. [Refigured, Myrica acuminata Vnger. Les- 

 quereux, Tertiary flora, 1878, p. 130, pi. 17, figs. 1, 4]. 



5. Fagopsis longifolia (Lesquereux) Hollick. 



Plate 21. 



Fig. 1. Myrica coloradensis, new species. 



2. Planera v^yricacfolia (Lesquereux) Cockerell. 



3. Quercus scudderi, new species. 



4. Crataegus, species. 



5. Cytisus Jlorissantianus Lesquereux. 



6. Ilex micwphylla Lesquereux. 



7. Celastrinites elegans Lesquereux. 



Plate 22. 



Figs. 1, 2. Aristolochia williardiana, new species. 



3. Fraxinus ungeri Lesquereux. 



4. Rosa scudderi, new species. 



Plate 23. 



Figs. 1, 2. Fraxinus ungeri Lesquereux. 



3. Cytisus Jlorissantianus Lesquereux. 



4. Vida, species. 



