FOSSIL FLOltA. (393 



Florissant, Colorado. It ditiers essentially in liavnig- rather numerous 

 secondaries, which parallel enter the somewhat sharper teeth. M. falhtx 

 Lx.,^ also from Florissant, is evidently related, but has nuich larger, sharp 

 teeth, and nervation as in M. jiol'/iiiorjilia Lx. 



Habitat: Fossil Forest Ridge, bed No. 5, "8alix bed;" collected by 

 Wardand Knowlton, August 19, 1887. 



Myrica lamarensis n. sp. 

 PI. LXXXIV, fig. 5. 



Leaf firm in texture, narmwly lanceolate, narrowed below, apparently 

 acuminate at apex; margin at some distance above the base, provided with 

 numerous, small teeth: petiole short; n^idrib rather thick, .straight; uer\a- 

 tion pinnate, camptodrome, the secondaries joining and forming a thin line 

 from inside the border; other nervation destroyed. 



The little leaf has only the lower jxirtion preserved. It is now 3..") cm. 

 in length, and when entire was probal>ly not less than (J cm. long. It is 

 only 7 mm. broad, and has a short petiole about 2 mm. in length. The 

 nervation is also destroyed, except the midrib and about a dozen secon- 

 daries, which are seen to be alternate. They arch and join, producing a 

 marginal line just inside the margin. 



This little leaf does not a]>pear to have an\- very close relative in 

 this country. Those ajiproaching nearest, ]3erhaps, ai-e the narrow lea^■ed 

 species so common at Florissant, Colorado, such as J/, /iilhi.r Lx.,- and M. 

 scoftii Lx.^ They differ markedly, however, in the sharpK' .serrate margin 

 and craspedodrome nervation. 



Myrka Jxoiks'ucfoJia Ung., as figured by Heer"* from the Baltic Miocene, 

 is perhaps nearer to our s])ecies. This has the narrowed base and similar 

 teeth, but differs in the apex and in the nervation. 



Habitat: East bank of Lamar I\i\er, l)etween Cache and Calfee 

 creeks; collected b}- F. H. Kuowltou, August 21, 1888. 



'Op. cit., J). 147, PI. XXXII, iig.s. ll-lfi. 



-Ciet. anil Tert. Fl. p. 147, Fl. XXXII, figs. 11-16. 



••Loc. elf. p. 147, PI. XXXII, tigs. 17, 18. 



^Mioc. Bait. Fl., p. 67, PI. XVIII, fig. 4. 



