LESQUEEEUx.] PALEONTOLOGY LIGNITIC FLOEA SPECIES. 407 



localities, where its reiuaiDS are generally in great abundance and exclu- 

 sive of those of any other. 



LAUEUS SESSILIFLOEA, S2J. nov. 



A fructified narrow branch, bearing, attached to it, at equal distance 

 and sessile, four involucre or persistent calyces, nearly equally divided 

 to near the point of attachment in four oblong lanceolate-obtuse sepals 

 4 to 5 millimeters long, diverging crosswise. The appearance of the re- 

 markable fragment representing this vegetable is not easily conceivable 

 from a mere description. It is somewhat like a small branch of a Galium , 

 with whorls of four thick, short, half-open leaflets, the two opposite 

 ones on each side of the pedicel being joined to below the uiidule, and 

 rounded on the other side to the point of attachment like split involucral 

 teguments. They are alternately placed upon each side of the pedicel 

 and sessile. The same piece of shale bears some small oval-obtuse seeds 

 or nutlets, obscurely striated in the length, which seem to have been 

 detached from these involucres. The relation of these fragments is appa- 

 rently with some kind of Laiirinece, like those described by Heer, (Fl. 

 Tert. Hel v., II, PI. xc, Fig. 17,) and also with the fruit oi Benzoin antiquum^ 

 (same plate, Fig, 8.) The relation is confirmed by the presence upon the 

 same specimen of a fine well-i)reserved leaf of Laiirus, which I refer 

 to the same species as L. sessiliflorus. It is small, narrowly-elliptical, 

 blunt-pointed, nairowed to the base ; secondary veins alternate in an 

 acute angle of divergence; the upper pairs at equal distance and par- 

 allel ; the lower ones more distant and on a more acute angle of diverg- 

 ence, all camptodrome, following the borders in festoons, anastomosing 

 by nervilles, which are numerous, in right angle to the middle nerve, 

 forming large rectangular areas. This leaf also resem bles that of Benzoin 

 antiquum, Heer, [Joe. cit., Fig. 2,) differing especially by the secondary 

 veins more regular and still more distant. 



Habitat. — Evanston ; shale, above the upper coal, Wm. Cleburn. 



Peesea Brossiana, sp. nov. 



Leaves large, subcoriaceous, rigid, with entire, recurved borders, 

 obloug lanceolate, narrowed in a curve to a short acumen, and attenuated 

 to a short petiole ; nervation deeply marked ; surface undulate or bossed 

 between the secondary veins, which are parallel, on an acute angle of 

 divergence ; nervation and areolation of a Launis. The form of the 

 leaves is the same as that of L. Canariensis. The axils of a few of the 

 secondary veins are marked by a snjall tubercle or inflation as in this 

 last s[)ecies, and also in the leaves of DapJmogene Seerii, Gaud., but less 

 distinct. 



Habitat. — Mount Brosse or Troublesome Creek, Dr. Hayden. 



CiNNAoMOMUM KossMASSLERi, Heer. 



Two leaves, subcoriaceous, entire, or long oval, pointed (!), (broken,) 

 narrowed to a thick petiole; palmately 3-nerved ; lateral veins thin, 

 obsolete from above the base of the leaves, curving at a distance from 

 the borders in following them upward. 



The details of nervation are very undistinct, and the species not posi- 

 tively identified. The leaves rasemble especially those represented un- 

 der this name by linger, in Fl, Eadoboj, (PI, 1, Figs, 10, 11 ;) the lat- 

 eral veins, however, seem to approach nearer to the border in the 

 American form. 



Habitat. — Troublesome Creek, W. H. Holmes. 



