23 
Order, Rosales 
Family, rosaceae 
Genus, Cercocarpus H.B.K. 
Cercocarpus ravenscragensis Berry n. sp. 
Plate V, figure 6 
Leaves small, somewhat inequilateral, obovate or spatulate; margin 
prominently dentate distad; teeth diminishing proximad and basal one- 
third of margins entire. Apex broadly rounded. Base cuneate. Length 
3-5 cm. Maximum width, above middle, about 2 cm. Petiole short, 
stout, curved, expanded proximad, about 4 mm. in length. Mid vein 
relatively very stout and prominent. Secondaries stout, about seven 
fairly regularly spaced pairs; they diverge from the midvein at acute 
angles, are relatively straight, and subparallel and camptodrome. Ter- 
tiaries relatively stout, not well preserved, forming a rosaceous areolation. 
This form is clearly rosaceous in its venation and agrees rather well 
with the existing Cercocarpus parvifoUus Nuttall of the somewhat arid 
uplands of western North America. The genus comprises arborescent 
and shrubby species and is confined to North America in the region between 
Idaho and Mexico. Several fossil species have been recorded, mostly 
from the later Tertiary, but one species has been described by Knowlton 
from the Raton formation of New Mexico. 
Occurrence. Ravenscrag beds, north branch of Frenchman river, 
SE. I sec. 22, tp. 7, range 22, W. 3rd mer. 
Family, leguminosae (Incertae sedis) 
Leguminosites williamsi Berry n. sp. 
Plate V, figure 1 
Leaflet small, obovate in outline, markedly inequilateral, with a 
broadly rounded apex and an abruptly cuneate base. Margin entire. 
Texture coriaceous. Length about 2 cm. Maximum width about 1 cm. 
Midvein stout, curved. Secondaries relatively stout, about five ascending, 
camptodrome pairs. 
This leaflet is new and represents a type met with in a great variety 
of leguminous genera. In the absence of more information than is afforded 
by the present material it is impossible to determine its generic affinity, 
although it probably represents Cassia or Sophora. It is named for the 
collector, Professor M. Y. Williams. 
Occurrence. Ravenscrag beds, north branch of Frenchman river, SE. | 
sec. 22, tp. 7, range 22, W. 3rd mer. 
