338 GEOLOGICAL SURVEY OF THE TERRITORIES. 



narrow and scarcely distinct except near the base where it becomes inflated; 

 lateral veins close and thin, a few of them more prominent and thicker, all 

 running to the borders in an acute angle of divergence and nearly straight. 



The fragment figured here is the second specimen of a leaf of this 

 kind observed in the Cretaceous. Its relation seems authorized. 



MONOCOTYLEDONUS. 



Glumace^e. 



Phragmites cretaceous, Lesqx., Cret. El., p. 55, PI. I, figs. 13 and 



14; PI. XXIX, fig. 7. 



Leaves and culms of various size, the leaves gradually narrowed to an 

 obtuse point, doubly veined ; primary veins thickish or inflated by the epi- 

 dermis, under which only the intermediate secondary veins, three or four, 

 may be discernable. 



The reference of the fragment of stem and the knot, PI. T, figs. 13 and 

 14, and of the leaf, PI. XXIX, fig. 7, of the Cret. Flor., has been contested 

 as very uncertain. The exactness of the determination, however, is 

 rendered probable, at least, by the presence of fragments of the same 

 kind in the Upper Cretaceous of Greenland, and described by Heer, loc. 

 cit., p. 104, PI. XXVIII, figs. 8, 11, as Arundo grcenlandica. The leaf, fig. 

 11, and its point, fig. ll b , have the same form as that of our fig. 7. I have 

 more recently still received a number of fragments of small culms, one to 

 one and a half centimeters, representing still more clearly the characters 

 of the species. The distance between the primary veins is variable. 



DIG-SCORED. 



Dioscorea 1 ? cretacea, Lesqx., Cret. Flor., p. 56, PI. XXVIII, fig. 10. 

 Leaf coriaceous, entire, nearly tound, slightly emarginate at the point, 

 broader than long, rounded or truncate at the base; veins apparently all 

 from near the base, the outside ones curving parallel to the borders and 

 sparingly branching ; the other parallel to each others, simple, curving in 

 the same way in ascending, connected in the upper part by arched nervilles, 

 the inner ones aerodrome. 



PALMD. 



Flabellaria? minima, Lesqx., Cret. Flor., p. 5G, PI. XXX, fig. 12. 



Rays narrow, splitting in lacinice; veins prominent, parallel ; intermediate 

 space concave, marked by indistinct veinlets parallel to the primary veins. 



The reference of these small fragments to the Palm family is gen- 

 erally contested. 



DICOTYLEDONOUS. APETALEiE. 



ITEOIDEJ3. 



Liquidambar integrifolium. Lesqx., Cret. Flor., p. 5G, PI. II, figs. 

 1-3 ; Pi. XXIV, fig. 2. 

 Leaves coriaceous, variable in size, deeply five palmately lobed ; divisions 

 ovate lanceolate, obtusely pointed, entire, separated by obtuse sinuses ; infe- 

 rior lateral lobes in right angle to the midrib ; nervation camptodrome. 



