DESCRIPTION OF SPECIES. 2 1 7 



at right angles to it, slightly curved in passing toward the borders, numerous, 

 abruptly curved and incumbent near tl>e borders, camptodrome. 



The leaf could ])e compared to some species of" Ficus, like F. hiiilfi- 

 tierpis Heer, by its nervation; l)ut the petiole is lik<; a continuity of the 

 midrib, being Hat and narrow. The secondaries are numerous, nearly at 

 right angles, with some trace of thinner, parallel tertiaries, which, however, 

 are scarcely observable; the areolation is totally obsolete. The leaf is 

 T.S""" long, nearly 3""' broad at the middle, witli a petiole \ly'"' long, apjjar- 

 ently bi-oken. The secondaries are 3'"™ to 4""" distant at tlie base, and 

 diverge from the mith'ib at an angle of 70°. 



Habitat: Near Fort Ilarker, Kansas. No. 272G of the U. S. National 

 Museum. 



Phyllites AMissus, sp. nov. 

 PI. LXII, Fig. 1. 



Leaf of medium size, coriaceous, elliptical, emarginate at apex, entire, 

 slightly narrowed toward the l)ase and rounding in joining tlie median 

 nerve; midrib thick or rather stout, nearly equal its wliole length; second- 

 aries eleven to twelve pairs, open, diverging ()()° from the midrib, sliglitly 

 curving, disappearing before reaching the borders, apparently camptodrome. 



The leaf is 9.5"" long, 4°" wide in the middle. The leaf is emarginate 

 at the apex and ))y its form may be compared to SapoUicitcs rctasHs Pleer,' 

 but the nervation is of a far different type. As yet the generic relation is 

 not known. Rather referable to Bond>ax and comparable to />'. (jhloiif/ifo/iitm 

 Ett.,^ from which it differs by the broader, oval .size of the leaves and tlie 

 somewhat longer secondaries. 



Habitat: Near Fort Harker, Kansas. No. 2756 of the U. S. National 

 Museum. 



Phyllites aristolochi^formis, sp. nov. 

 Pl. LIX, Fig. 8. 



Leaves sagittate-hastate, auricled at base, tapering up from tlie base 

 and acuminate, entire; texture thin; midril) naiTow, ])ercurrent ; seconda- 

 ries oblique, camptofh'ome, very thin; uervilles curved and branching into 

 i[ large irregular areolation. 



This leaf is 5""' long and 3*"° broad above the base, where it is rounded 

 into unequal lobes or auricles, only one descending lower than the base 



' Fl. Fobs. Arct., vol. 7, p. :i2, PI. LXI, Fig. 10. 

 2 Fl. V. BUin, pt. 3, PI. xlii, Fig. 10. 



