292 GEOLOGICAL SUEVEY OF THE TERRITORIES. 



POPULUS ovALis, (?) Gopp., (Schossnitz, Fl., p. 23, PI. xvi, Fig. 1.) A 

 fragment, only the middle part of a leaf, with crenate borders, and ner- 

 vation of this species, or of Fopulus eximia, of the same author, loc. cit.. 

 Fig. 2. 



PoPULUS MUTABiLis var. EEPANDO-CEENATA, Heer. Agrees in every 

 point, form of leaf, nervation, &c., with Heer's Fl. Ter. Helv., PI. Ixii, 

 Figs. 5 and 6. 



PopuLUS Zaddachi, (?) Heer. Apparently a small form of this species, 

 at least referable to it by the nervation ; the borders of the leaf being- 

 destroyed. The nervation is like that of the leaf, PI. v, Fig. 4, of Heer's 

 Baltic Flora. 



Alnus Kefersteinii, Gopp. There is a large number of specimens of 

 this species, with the leaves of the same characters as those figured by 

 Heer in Fl. Alas., PI. 3, Figs. 7 and 8, and also in Fl. Arc, I, PI. xxv, 

 Fig. 9. Some of the specimens have remains of small seeds and of scales 

 resembling those of this species. 



CoEYLTJS McQuARRYi, Hccr, (Fl. Arc, I, p. 104.) The author has 

 given numerous figures of this variable species. Two forms are especially 

 marked, one with large leaves, having a deeply cordate base, and more 

 distant secondary veins ; the other with smaller leaves, rounded, slightly 

 cordate at base, and more closely approached secondarj^ veins. Both 

 these forms, and their intermediate, as figured in Fl. Alas., Tab. iv, are 

 represented by our specimens. 



QuBRCUS Negundoides, sp. nov. Leaf thick, about two inches long, 

 cordate at base, enlarged upward to the three-fourths of its length, 

 where it is jialmately cleft in three lobes, the two lateral shorter and 

 obtuse, the medial longer and pointed ; borders undulate crenate ; peti- 

 ole half an inch long 5 medial nerve narrow; secondary veins, about five 

 pairs 5 angle of divergence, 35° 5 the lowest pair not as thick, and slightly 

 more arched than the upper ones ; all craspedodrome, and nearly oppo- 

 site ; a remarkable form, differing from all the species of oak known to 

 me, by its palmately cleft leaves. It is distantly related to Quercus tri- 

 migularis, Gopp., (Schossnitz, Fl., p. 15, PI. vi. Figs. 13-17,) and some- 

 what resembling a Negundo by the form of the leaves and nervation. 



Quercus Drymeja, Ung., var. (?) Leaves linear-lanceolate, gradually 

 narrowed to the petiole; medial nerve broad and flat; secondary veins 

 in an open angle, more open toward the base, curving along the entire 

 merely undulate borders. We have two specimens of this form, one 

 representing a whole coriaceous leaf, two inches long, half an inch broad, 

 tapering upward into a long point, with a petiole half an inch long. 

 All the leaves referred to this species by the author in his Chloris, 

 and by Heer, also, in Fl. Ter. Helv., have the borders regularly dentate. 

 Even this character is considered by Unger as an essential one of his 

 species. Our leaves, on the contrary, have entire borders, and secondary 

 veins more oj)en, as in Quercus NeriifoUa, Heer. I am, therefore, in 

 doubt if this form is a mere variety of Unger's species, though Heer, in 

 Fl. Arc, PI. xi. Fig. 3, has, from Greenland, a leaf with more open veins 

 and undulate or scarcely dentate borders, which he considers as a 

 variety of Q. Drymeja ; and Gaudin, in 2 Mem., Fl. Foss. Ital., describes 

 and figures numerous leaves of this Quercus to characterize his multiple 

 varieties, one of which, Q. Drymeja var. Integra, {loc. cit., PI. iv, Fig. 22,) 

 exactly agrees in form and nervation with our leaves. 



Fagus Deucalionis, Ung. The same form is figured in Heer's Fl. 

 Arc, PL X, Fig. 6, and PL xlvi. Fig. 4, with this difference only, that 

 one of the secondary veins of our leaf bears two small tertiary branches, 



