300 UN ITED STATES ( '. E()I.( )( i ICAL SUltVEY— TERTIARY FLORA. 



roiigli. "^riie relation of this Icallct to the one descrilted by Heer as yl. rig/da 

 (Fl. Tert. Ilelv., iii, p. 13.'}, pi. c.\l, fig. 22) is evident TUr liard textnre of 

 the leaflets and Iheii- nervation are the same: the}' merely diifer by the shape. 

 ■ Habitat. — Near Castello's Ranch, Colorado {Dr. F. V. Haiidcn). 



MIMOSITES, Ett. 

 Ifliniositcs I i bi earif o I i us, Lesqz. 



Plate LIX, Fig. 7. 



Ccesalpinia linearis?, Lesqx., Aaunal Report, 1S73, p. 417. 



Leaf inip.aripiniiatp ; lealiots opposite, close, small, linear, abruptly pointeil, falcate upward, 

 rounded at the point of attachment to the narrow common pedicel; nerv.atiou obsolete. 



The fragment, the upper part of a leaf, has seven pairs of leaflets on a 

 length of two and a half centimeters. These leaflets appear of a somewhat 

 thick te.xture, as every trace of nerve, even of the middle one, is concealed. 

 They are narrow, only two millimeters broad, the lowest one and a lialf 

 millimeters long, nearly linear, obliqne, rapidly pointed, and curved upward 

 near the point, ses.sile by a rounded base. This species is evidently related 

 to the Miinosce rather than to the Leguminosx. It has especially a marked 

 degree of relation to Pitheculohium duke, Mart , a living species of Brazil, 

 whose leaflets, of the same form and size, scythe-shaped toward the point, 

 have a very thin nervation, and are sessile and rounded to the base. 



Habitat. — Florissant, near South Park, Colorado {Prof. E. D. Cope). 



LEGUMINOSITES, Brgt. 



Li e gruiiii n osi tes cassioidcs, ep. nov. 



Plate LIX, Figs. 1-4. 



Leaflets oblong, rounded in narrowing to a short petiole, apparently lanceolate to a point ; lateral 

 veins curved, reaching close to the borders ; areolation small, subquadrate from subdivisions of distinct 

 nervilles in right angle to the nerves. 



These leaflets are comparable to those of species of Cassia; for the shape 

 and the nervation, especially to C. herenices, Ung. (in Heer's Fl. Tert. Helv., 

 iii, p. 118, pi. c.Mxxvii, figs. 42-5G). The nervilles in right angle to the nerves 

 are, however, not distinctly marked in this European Miocene species. Our 

 fig. 3 has the inequilateral form, and the lateral nerves branching as in C. 

 phaseolites, Ung. (in Heer, /oc. cit., p. 119, pi. cx.xxviii, fig. 7). The attribu- 

 tion of this last species is doubtful, according to Schimper. 



Habitat. — The three finst figures are from specimens from Green River, 

 Wyoming, above fish-bed {Dr. F. V. Ilaydcii); the fi)urth from Si)ring Cailon, 

 near Fort Ellis, Montana {Jos. Savage). 



