62 FLORA OF THE MONTANA FORMATION. 
ently pass to the rounded lobes or are once or twice forked, the branches 
passing to the lobes 5 liner nervation not preserved. 
This fine leaf was the only dicotyledon found in these beds after much 
search. It is much broader than long, being G.5 cm. broad and about 
4 cm. long. The base is regularly rounded to a very deep, sharp sinus, 
appearing almost peltate. The apex is very obtuse, even truncate. The 
margin has about six or seven broad, short, obtuse, entire or erose lobes, 
separated by very shallow sinuses. The palmate nervation apparently 
passes directly, or once forking, to the lobes. The nervation is very 
obscure and none of the finer details can be made out. 
It is with some hesitation that this leaf is referred to the genus 
Menisperinites, but it appears to resemble that genus more closely than 
any other with which I am familiar. It is, for example, in general appear 
ance not greatly unlikelf. grandis Lx., 1 from the Dakota group of Kansas. 
This latter species differs, however, in being more rounded and distinctly 
peltate. The nervation is quite similar. 
1 take pleasure in naming this species in honor of Prof. W. C. Knight, 
of the University of Wyoming, who indicated the locality at which the 
specimen was found and assisted in making the collection. 
Habitat. — Near Harpers Station, on the Union Pacific Railroad, 
Wyoming. 
TRAPA % MICROPHYLLA Lx. 
PI. V, fig. 7. 
Trapaf microphylla'Lx., Bull. U. S. Geol. and Geog. iSurv. Terr., Vol. I, p. 369 (1875); 
Ann. Rept. U. S. Geol. and Geog. Surv. Terr., 1874, p. 304 (1876); ibid., 1876, 
p. 518 (1878); Tert. Fl., p. 295, PI. LXI, figs. 16,17, 17a; Newberry, Trans. N. Y. 
Acad. Sci., Vol. IX, p. 30 (1889); Bull. Geol. Soc. Am., Vol. I, p. 525 (1890); 
Dawson, Trans. Roy. Soc. Canada, 1886, p. 31 (1886). 
? Neuropteris angulata Newb., Rept. Colorado Exploring Exped., under Lieut. J. C. 
Ives, p. 131, PI. Ill, fig. 5 (1861). 
Only one of the figured specimens, the original of fig. 17 of PI. LXI, 
Tertiary Flora, is now found in the collection of the United States 
National Museum. The other figured type has never been there, and 
inasmuch as Lesquereux speaks of having seen specimens belonging 
to Mr. William Oleburn, it is more than probable that it was in his 
collection, the whereabouts of which is unknown. A number of fairly 
good specimens were obtained by Professor Ward at the type locality. 
The original specimens came from Point of Rocks, Wyoming. After 
describing them carefully, Lesquereux writes (Tert. Fl., p. 295) as 
follows : 
These leaves, represented in numerous specimens, vary in size from a little more 
than one centimeter long, and nearly as large, to about two and a half centimeters 
long and nearly two broad. They are generally oval, very obtuse and somewhat 
enlarged upward; the borders are minutely dentate, except at or near the base, 
rounded to a comparatively long and slender petiole, the only one of the leaves 
'Cret, and Tert, FL, p. SO, PI, XV, figs. 1, 2. 
