52 FLORA OF SOUTHEEN NEW YORK AND NEW ENGLAND. 



which they present, and that m any revision of the genus these and perhaps some 

 recognized species might be grouped together, but inasmuch as the several forms 

 with which our specimens may be compared have been described and figured under 

 different varietal or specific names, I have thought it best to so refer them in this 

 monograph, which is essentially stratigraploic rather than biologic in its scope and 

 purpose. 



Locality: Sea Cliff, Long Island, PI. VIII, fig. 5. Collected by GUbert Van 

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



Black Rock Point, Block Island, PI. VIII, fig. 6a. Collected by Arthur Hol- 

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



Kreischerville, Staten Island, PI. XXXVII, fig. 8b. Collected by Arthur 

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



SaLIX PROTE.aEFOLIA LANCEOLATA LesqUCrCUX. 

 PI. VIII, figs, la, 2-4. 



Salix protexfolia var. lanceolata Lesq., Mon. U. S. Geol. Survey, vol. 17 (Fl. Dak. Gr.), 1892, p. 50, pi. 64, 

 figs. 6-8; Hollick, Annals New York Acad. Sci., vol. 11, 1898, p. 59, pi. 4, fig. 4. 



Sdix proteasfolia Lesq. Hollick, Bull. Geol. Soc. Am., vol. 7, 1895, p. 13. 



Salix insequalis Newb.« Hollick, Annals New York Acad. Sci., vol. 11, 1898, p. 419, pi. 38, fig. 4a; Fifty-fifth 

 Ann. Kept. New York State Mus., 1901 (1903), p. r49. 



In connection with these figures the same or similar criticisms may be made as 

 in connection with the discussions of other closely related forms of Salix included in 

 this monograph, in which varietal and specific names are to be regarded more as 

 convenient designations than as names which are necessarily botanically correct in 

 their systematic arrangement. 



Locality: Arrochar, Staten Island, PL VIII, fig. la. Collected by Arttiur 

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



Black Rock Point, Block Island, PI. VIII, fig. 2. Collected by Arthur Hol- 

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



Gay Head, Marthas Vineyard, PI. VIII, figs. 3, 4. Collected by David White. 

 Specimens in U. S. Nat. Mus. 



Salix PROXEiEFOLiA linearifolia Lesquereux? 

 PI. VIII, fig. 12. 

 Sdix protexfolia var. linearifolia Lesq., Mon. U. S. Geol. Survey, vol. 17 (Fl. Dak. Gr.), 1892, p. 49, pi. 64, 

 figs. 1-3. 

 It is exceedingly difficult to distinguish the differences between the several 

 varietal forms included by Lesquereux in this species " and others referred to Salix 

 cuneata Newb.'' and S. Meekii Newb.,"^ and the specimen now under consideration 

 might perhaps be regarded, by reason of its expanded base, as yet another variety 

 or species. As, however, it is not perfect, I have thought that it would not be 

 advisable to make it the basis for the description of a new form. 



Locality: Gay Head, Marthas Vineyard. Collected by Arthur Hollick. Speci- 

 men in Mus. New York Bot. Gard. 



a Var. flexuosa, loc. cit., p. 50, pi. 64, flgs. 4, 5. Var. lanceolata, ibid., figs. 5-8. Var. longifolia, ibid., fig. 9. 

 6 Mon. U. S. Geol. Survey, vol. 35 (Later Ext. Fl. N. Am.). 1898, pi. 2, figs. 1, 2. 

 clbid., pi. 2, fig. 3. 



