298 GEOLOGICAL SUEYEY OF THE TEEEITOEIES. 



rugose, which is not the case in ours. HoweYer, Professor Heer has 

 in his Arctic Flora figured this species, (II, p. 472, PI. xlix, Fig. 2-4.) 

 without mentioning the rugosity of surface, and with form of leaves, 

 dentation, and nervation of exactly the same characters as iu our speci- 

 mens. It is very i^w^obahly the same. 



Ficus TILL3EF0LIA, Al.'^Br. Obscurc fragments. 



Sassapeas, species. Represented only by a single specimen of the 

 lower part of a leaf. The lateral veins branch at a distance from their 

 base, and there is no trace of tertiary nervation or areolation. These 

 are mere negative characters, and the only ones agree! ug with those 

 of Sassafras Ferretlaiuim^ Mass., a species which is restored by 

 Heer, from fragments of Greenland, in Fl. Arc, IT, p. 474, PI. 1, Fig. 2. 

 Ours differs by the borders and the lateral veins diverging from the 

 petiole and from the medial nerve in an augle of 60^, douWy as broad 

 as the augle of divergence in the species from Greenhmd. I have no 

 access to Massalongo's description and figure of bis species, but from 

 Gaudin, who has the same species published iu Fl. Ital., II, p. 50, PI. 10, 

 Fig. S, ours is far different, especially by the total absence of secoudary, 

 horizontal veins, lower than the fork of the primary veins, and also of 

 the reticulation, generally so well marked iu leaves of this genus. 



Ci^'XA3i03ir:i Scheuzeei, Heer, (Fl. Ter. Helv., p. 85.) Tbis spe- 

 cies is represented iu its various forms h\ a number of specimens, even 

 in its marked variety figured loc. cit., PI. xciii, Fig. 2, 3, 4. 



A^'DR03lEDA Geayaxa, Hccr, (Vancouver FL, p. 7, PI. i, Fig. 7-9.) 

 The same can be said of this S])ecies as of the former. It is repre- 

 sented in the specimens bj' such a large number of fragments of its 

 various parts and of various sizes that it is not possible to doubt iden- 

 tity. Some of our fragments are still larger than Fig. 0, he. cit. 



AXDE03IED A EETICULATA, (?)Etting., (iu Heer, Bait. Fl.,p. 30, PI. xxvi. 

 Fig. 5-9.) Two lanceolate leaves of thick, leathery texture, tapering 

 to the petiole, with a broad, half-round medial nerve, and obsolete, 

 secondar}' veins at an acute angle, like those of A. Grayana^ curving 

 along the borders. The undistinct reticulation appears to be as figured 

 by Heer ; but this appearance may be due to the coarseness of the 

 stone. By their form and the direction of the secondary veins the 

 leaves resemble A. Grayana^ differing, however, evidently by the thick- 

 ness of the medial nerve. Both these leaves are larger than those fig- 

 ured in the Baltic Flora, being about 3 millimeters broader. 



J^GLA^'s EUGOSA, (?) Lsqx.; C GENUS ACUMINATA, (f) Xewby. The 

 same remark is applied to this leaf as in p. 294 to JxKjlan^s Bliamnoides. 



Lyeiodexdeox, species. Also represented by one fragment, the 

 lower half of a leaf. The base is at first obliquely descending to the 

 l^etiole, and then, curving abrui^tly downward, becomes decurreut upon 

 it in a short border; leaf of thick texture, with broad medial nerve; 

 secondary veins and nervilles strongly marked. In his Fl. Arc, Pro- 

 fessor Heer has figured, without description and specification, (I, PI. xxvi, 

 Fig. 7 h.) from Iceland, part of a leaf of Lyriodendron^ of same size, 

 differing only from ours by the not decnrrent base. 



EHA3rxus EECTiXEEYis, Heer. A single specimen of a whole leaf. 

 Ko dilference. See above (p. 295) remarks on the same species. 



JUCiLAXS DENTICULATA, HeCF. (Fl. Al'C, II, p. 183, PI. Ivi, Figs. 6-9.) 

 Leaves lanceolate rounded to the petiole (broken,) with undulate 

 borders, denticulate near the point; secondary veins much curved, espe- 

 cially toward the base of the leaf, the end running close to the borders, 

 numerous, 12 iiairs or more. Except that this leaf is narrower, nearly 

 linear, or with borders parallel in the middle, it does not difter from 

 the Greenland form. 



