SALICALES. 113 



Newberry calls attention to the resemblance of this species to 

 Populu^ hyperborea Heer, but is quite positive that it is not re- 

 lated to Popiilus. The writer does not share this opinion. Un- 

 less we are prepared to discard Populus for Phyllites in a large 

 number of cases, this species should surely be referred tO' the 

 former genus. It is a remarkable coincidence referred to in 

 the present connection only because of its general interest that 

 the type of Sternberg's genus Phyllites was very likely a true 

 Populus and that Phyllites as a form genus for undeterminable 

 leaves will probably have tO' be dropped eventually in favor of 

 some other name. 



The present species is based upon scanty but perfect material 

 confined to the Sayreville horizon. 



Occurrence. — Sayreville. 



Collections. — N. Y. Botanical Garden. 



Genus SALIX Linne. 



(Sp. PI, 1753, P- lois.) 



Saux Newberryana Hollick. 



Plate XI, Fig. 2. 



Salix Nezvberryana Hollick in Newb., Fl. Amboy Clays, 68, 

 pi. 14, f. 2-7, 1896. 



Description. — Leaves lanceolate in outline, 8 cm. to 12 cm. in 

 length, by i cm. to 2.5 in breadth, with an elongated acuminate 

 apex and a cuneate or more or less rounded base, petiolate. 

 Margins finely sharp-serrate to within a short distance of the 

 base. Midrib mediumly stout. Secondaries fine, more or less 

 obsolete on the upper surface of the leaf, but well defined on the 

 under side. They are numerous, parallel, branching from the 

 midrib at an angle somewhat over 40°, and sweeping upward in 

 broad curves, camptodrome. Areolation polygonal, relatively 

 coarse. 



This species is frequent in the Raritan, but the specimens are 

 mostly incomplete. To the localities enumerated by Proi. New- 



