DESCRIPTION OF SPECIES. 179 



The leaf is also related by its nervation, its form and coriaceous texture, 

 and its petiole, to Bignonia capreolata L., of the southern United States. 



Habitat: Ellsworth County, Kansas. No. 810 of the collection of Prof 

 F. H. Snow. Collected by E. P. West. 



Ilex Masoni, sp. nov. 

 PI. VII, Fig. 6; PI. LXIII, Fig. 6. 



Leaf subcoriaceous, linear-oblong, slightly enlarged in the lower part, 

 cuneiform to the base, apparently obtuse (point broken) repand-dentate on 

 the borders; primary nerve comparatively thick; secondaries open, arched 

 in passing toward the borders, camptodrome, anastomosing in broad, angu- 

 lar curves at a distance from the borders, to which they are joined by 

 branches at right angles to the curves. 



The first leaf is about I'i"" long, 4.5"" broad below the middle, where 

 it is slightly enlarged, is marked by a few obtuse teeth, the upper part 

 being entire or slightly undulate. The lower pair of secondaries are thin, 

 at a more acute angle of divergence, 50°, inequidistant, parallel, somewhat 

 strong, distinctly camptodrome, the upper pair appearing more curved in 

 ascending toward the apex. The bows formed by angular anastomosis of 

 the secondaries at a short distance from the borders are linked to them by 

 short nervilles at right angles. The surface is smooth, nearly polished, 

 indistinctly marked by transverse nervilles. The other fragment indicates 

 a leaf scarcely broader but much longer, broken at both ends, and cut in 

 deeper, large teeth. 



These leaves resemble those of /. horealis Heer,' but are larger, also 

 /. lonf/ifoUa Heer,^ the borders of which are also minutely dentate, etc. 



Habitat: Pipe Creek, Cloud County, Kansas. No. 4105 of the collec- 

 tion of Mr. R. D. Lacoe. Collected by Mr. S. C. Mason, for whom the 

 species is named. 



' Fl. Fobs. Arct., vol. 7, p. 39, PI. lxiv, Figs. 3, 4. 

 »F1. Foss. Arct., vol. 1, p. 124, PI. xlviii, Figs. 3, 4. 



