FLORA OF THE DAKOTA GROUP. 53 



centimeters broad at or below the middle. The secondary veins, distinctly 

 curved in passing from the midrib to the borders, are more or less distant, 

 rarely separated by shorter tertiary veins cut at right angles by strong 

 nervilles, which are simple or anastomosing in the middle, the upper ones 

 ascending to the borders. The areolation is not seen, the surface appear- 

 ing punctulate or closely dotted by small areoles. 



In my first description of this species, I. c, I compared it to Proteoides 

 daphnogenoides, from the shape of the leaves only. This affinity is distant. 

 By the form of the leaves this species rather resembles Fiats Krausiana, 

 Eeer, and F. Beckwithii, described above. Its venation is that of Laurus 

 Xcbrasccnsis, from which it differs by the narrower medial nerve, the 

 secondary veins more slender and more curved in passing to the borders, 

 the prolonged point of the leaves, etc. 



Hub. — Near Fort Harker, Kansas. Chs. Sternberg. Recently found at 

 Morrison, Colorado, by A. Lakes. 



Laurus? modesta, sp. nov. 



Plate XVI, Fig. 4. 



Leaves small, linear-oblong, cuneate to the petiole; midrib thick; secondary veins 

 irregular in distance, camptodrome, following close to the borders in prolonged curves. 



There is only a fragmentary specimen of a small, apparently linear- 

 lanceolate leaf (point broken), whose relation is not positively ascertained. 

 The nervation is like that of Laurus primigenia, Ung., in Sap. "EL."" 2. 1, 

 p. 89, pi. hi, fig. 8, the lateral veins at about the same distance and oblique 

 in the same degree, curving high and close to the borders; but no trace of 

 areolation is distinct. This fragment is also related to MyrtopTvyllum 

 pusillum, Heer, "Quedl. Fh," p. 14, pi. iii, fig. 10, represented by a still 

 smaller fragment of leaf, round at base, with secondary veins curved and 

 following high along the borders. 



Hab. — Near Morrison, Colorado. H. C. BecJcwith. 



PERSEA, Gsertn. 



Persca Leconteana, Lesqx. 

 "U. S. Geol. Rep.," vi, p. 75, pi. xxviii, fig. 1. 



Persea Stern bergii, Lesqx. 

 " U. S. Geol. Rep.," vi, p. 76, pi. vii, fig. 1. 



