218 UNITED STATES GEOLOGICAL SURVEY— TERTIARY FLOEA. 



in fig. d, which bears seeds without involucre, and thus seems to belong to 

 the same plant. 



This species is remarkably similar to the living Tetranthera laurifolia, 

 Jacq., by the lanceolate or oblanceolate shape of the leaves, with secondary 

 veins distributed in the same manner, and very distinct like the nervilles, the- 

 areolation being less marked, and discernible only with a strong glass; the 

 Hovvers, sessile upon the branchlets, have the quadripartite involucre with 

 lobes of the same form as in their fossil fragments, only slightly shorter, and 

 overlapping at the base, or apparently connected as in fig. h. The specimens 

 wliich I have for comparison are from Japan and from Cuba. These last 

 ones, to which the fossil species is similar, represent the var. saligna of the 

 Prodromus, which indicates its habitat in Ceylon. As the species is often 

 cultivated in the tropical islands, it may have been introduced into Cuba. 



Habitat. — Evanston, Wyoming, with Laurus pnmceva, from which it is 

 easily separated by the distinct nervation. The specimen belongs to Mr. 

 Wm. Clebu7-n, to whom I owe its communication. The fruits (pi. xxiv) are 

 from the same locality, and seem clearly to represent the same species. 

 They are only a little smaller 



CINNAMOMUM, Bum. 



The leaves of the species of this genus, which is now distributed in the 

 equatorial regions of East India, China, and Japan, are distinct from those 

 of the other LaurinecB especially by the triple or palmate divisions of their 

 nerves. The two lateral nerves go out from the base of the midrib, ascending 

 toward the top of the leaves in a curve, without reaching the point. Some- 

 times they bear at the base one pair of marginal veinlets, and also sometimes 

 another intermediate pair, emerging from the midrib under the primary lateral 

 nerves, and nearly as strong but shorter, and without branches. This last 

 character is not indicated in the descrijjtion of the leaves of this genus, and 

 has not been remarked in fossil species published by European authors. But 

 it is distinctly seen upon some leaves of Cinnamomum Zeylamcxim, exactly 

 the same as upon one of the leaves described here. 



Eighteen fossil species are described by European authors, distributed 

 from the Upper Eocene of the Gypses of Aix to the Upper Miocene of 

 CEningen, etc., mostly in the southern parts of France and Germany, and in 

 Switzerland and Italy. None has been described in the Baltic flora, and none 



