DESCRIPTIONS OF SPECIES. 51 



mens, especially fig. 26, bear a strong resemblance to the leaves referred by Les- 

 quereux to Myrica longa Heer," with which species I was at first inclined to include 

 them. 



Locality: Kreischerville, Staten Island, PI. VII, fig. 26. Collected by Arthur 

 HoUick. Specimen in Mus. Staten Island Assn. Arts and Sci. 



Arrochar, Staten Island, PL VII, fig. 27. Collected by Arthur Hollick. 

 Specimen in Mus. Staten Island Assn. Arts and Sci. 



Glen Cove, Long Island, PI. VIII, fig. 7. Collected by David Wliite. Specimens 

 in U. S. Nat. Mus. 



Salix Meekii Newberry. 



PI. VIII, figs. Ic, 8, 9. 



ScHix Meehii New^., Annals New York Lye. Nat. Hist., vol. 9, 186S, p. 19; Mon. U. S. Geol. Survey, vol. 35 

 (Later E.xt. Fl. N. Am.), 1898, p. 58, pi. 2, fig. 3: Hollick, Trans. New York Acad. Sci., vol. 16, 1897, p. 130, 

 pi. 13, figs. 3, 4; Bull. New York Bot. Gard., vol. 2, 1902, p. 404, pi. 41, Eg. 1. 



Myrsine elongata Newb. Hollick, Annals New York Acad. Sci., vol. 11, 1898, p. 420, pi. 38, fig. 4c. 



From the biological point of view the wisdom of attempting to maintain the 

 specific or varietal rank of all the numerous described forms of Salix included in 

 this monograph will doubtless be criticised, but for geological reasons it may be 

 convenient at times to designate a certain form by a distinctive name and to com- 

 pare it with a figure so named, from some particular locality or horizon. The fact 

 should never be lost sight of that in stratigraphic work the positive identification 

 of a specimen with a named figure is of far greater importance than the cpestion 

 whether the name represents its correct botanical relationships, and any change in 

 nomenclature may often lead to serious confusion in this connection. By reason 

 of these considerations I have therefore made as few changes in nomenclature as 

 possible. 



Locality: Arrochar, Staten Island, PL VIII, fig. Ic. Collected by Arthur 

 Hollick. Specimen in Mus. Staten Island Assn. Arts and Sci. 



Chappaquiddick, Marthas Vineyard, PL VIII, fig. 8. Collected by Arthur 

 Hollick. Specimen in Mus. New York Bot. Gard. 



Nashaquitsa, Marthas Vmeyard, PL VIII, fig. 9. Collected by David White. 

 Specimen in U. S. Nat. Mus. 



Salix PROXEiEFOLiA flexuosa (Newberry) Lesquereux. 

 PL VIII, figs. 5, 6a; PI. 5XXVII, fig. 8b. 



Sdix protexfolia var. flexuosa Lesq., |Mon. U. S. Geol. Survey, vol. 17 (Fl. Dak. Gr.), 1892, p. 50, pi. 64, figs. 



4, 5; Hollick, Bull. Torrey Bot. Club, vol. 21, 1894, p. 50, pi. 174, fig. 5; Annals New York Acad. Sci., 



vol. 11, 1898, p. 59, pi. 4, fig. 5a; Berry, Bull. New YorkBot. Gard., vol. 3, 1903, p. 67, pi. 48, fig. 12; 



pi. 52, fig. 2. 

 Salix flexuosa Newb., Annals New York Lye. Nat. Hist., vol. 9, 1868, p. 21; Mon. U. S. Geol. Survey, vol. 35 



(Later Ext. Fl. N. Am.), 1898, p. 56, pi. 2, fig. 4; pi. 13, figs. 3, 4; pi. 14, fig. 1. 

 Dewdquea Haldemiana (Deb.) Sap. et Mar. Hollick, Trans. New York Acad. Sci., vol. 12, 1892, p. 36, pi. 2, 



figs. 2a, 10. 



I am inclined to think that the recognition of this and other forms of S. protex- 

 folia by Lesquereux as varieties was hardly warranted by the slight differences 



oMon. U. S. Geol. Survej', vol. 17 (Fl. Dak. Gr.), pi. 3, figs. 1-6. 



