DESCRirXiON OF SPECIES— EOAMNB.E. 281 



scarcely divided; nnd liie neiviUes also and llic aieolation are of a diflereiit 

 cliaracter. Tlio few Ijraiudies seen Idward the npper pari of sonic; of the 

 nerves an; rather inllated nervil!(>s than true hraiiehes, like those of the living 

 li. hniceolatus, Piirsh., 7?. Wulffiill, yi)reng,etc. 1 have remarked, ia tlie 

 Ixcport {loc. cif.), that, when tlu; fructification of this and the following 

 species are known, they will probably constitute a separate group. 



Habitat. — Golden, Colorado; common. Very rare at Black l?utte.s, 

 Wyoming. r>r>f. F. 13. Meek found two fine leaves of this species in burned 

 reil shale at a short distance west of Black Buttes, Wyoming. 



It li a m II II s Ci o I d i a II 11 s , Lesqx. 

 PKitcLIII, F.iss. 4-8. 

 Ilhumniis Cloldianus, Lcsqx., Anmi.al Keport, 1872, p. :!81 ; lb73, p. 'lO'i. — Scbp., Pal. \Vg(5t., iii, p. CiV-i. 



Loave8 of small size, of the same consistence as those cf the former species, oval or ovate, obtusely 

 pointed or acuminate, subcordatc or rounded to a short petiole. 



These leaves are still more al)imdant at Golden than those of the former 

 species, from which they merely difT'er by the generally smaller size, the base 

 rounded or sul)cordate to a shorter petiole, the lateral veins generally more 

 numerous, and the lower ones more or less branching. Fig. 7, the smallest 

 of these leaves, reseml)les Berchemia multinervis. Hear, differing merely l)y 

 the branching of the lower lateral nerves, a character remarked in all the 

 leaves of the species, though variable their size and shape may be. 



Habitat. — Golden, Colorado. Rare at Black Buttes, Wyoming. One 

 specimen, representing the large form, is from Carbon, Wyoming. 



It li a in ii II s o b o V a 1 10 s , Lesqx. 

 Plate LIV, Figs. 1,2. 

 Hhamvus oloratim, Le.'-q.x., Amuial Report, 18G9, p. U)7 ; 1872, pp. 375, 381, 402. 



Leaves subeoriaceous, very entire, oblanceolate or obovate, grijdually rounded to an obtuse point . 

 lateral nerves very close, straight to the borders, camptodrouio. 



These leaves vary in size from seven to nine centimeters long, without 

 the jietiole, and from one and a half to three and a half centimeters broad 

 toward the point, where they are widest, gradually narrowing downward to 

 a short petiole. The middle nerve is thick, the secondary veins very close 

 and numerous, two millimeters distant, eighteen to twenty-two pairs in each 

 leaf, thin, parallel, straight, with their bows ju.st on the borders, and scarcely 

 discernible. By this nervation, they arc rather referable to Berchemia, having 

 their lateral nerves still more numerous than B. multinervis. 



