PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 447 



pared to Paullmia germanica Ung. (Sillog. plant., Ill, p. 52, PI. XVI, 

 fig. 8), and are possibly referable to this genus, mostly rewresented now 

 in tropical America. 

 Hah. — Cook's Inlet, Alaska. 



Salicine^. 



Salix Baeana Heer., Fl. Arct., I, p. 102, PI. IV., figs. 11-13 ; XL VII, 



fig. 11. 



Species described by Heer from specimens of Greenland. 

 ^«&.— Cook's Inlet. 



Populus Richardsoni Heer., U. S. Geol. Eep., VII, p. 177. 



Species abundantly represented in the Miocene flora of Greenland 

 and Spitzberg. 



Hab. — Chignik Bay. 



Populus arctica Heer., U. S. Geol. Eep., VII, p. 178, 



Has the same distribution as the preceding, and is still more common 

 in the Miocene of Greenland and North America. 



Sab. — With the preceding. 



Ulmace m. 



Ulmus sorbifoUa TJng., Schossnitz, Fl., p. 30, PI. XIV, fig. 10. 



Leaf oblong, with borders parallel in the middle; taper pointed or 

 acuminate ; secondary nerves numerous, close, parallel, half open (angle 

 of divergence 60°), generally forking near the doubly deutate-crenate 

 borders ; primary teeth blunt, turned upwards. 



The base of the leaf is destroyed. The preserved part is 4^^'" long, 

 2*=™ broad, with 18 pairs of deeply marked secondary veins. 



The species, which is not mentioned in Schimper's Veget. Paleont., is 

 closely allied to U. plurinervia Ung., which has been found in Alaska. 



Hab. — Chugachik Bay, Cook's Inlet. 



Nyssaceje. 



Nyssa arctica? Heer., Fl. Arct., II, p. 477, PI. XLII, fig. 12 c; L. figs. 



5, 6, 7. 



The fruit which I refer to this species is of the same size and form as 

 fig. 6, I. c, but less distinctly striate lengthwise ; the cross-wrinkles 

 slightly marked by Heer, in fig. 6 b. (enlarged), being as prominent as 

 the longitudinal strife. The fruit somewhat deteriorated by maceration 

 most probably represents the same species abundantly found in Green- 

 land. 



Hab. — Unga Island, Shumagin group, Alaska. 



