172 UNIVERSITY OF COLORADO STUDIES 



Polygonacecs (i species) 

 Dr. Small has described a species as Polygonum tertiarium. I saw 4he type 

 at the New York Botanical Garden. 



PimeleacecB (i species) 

 Pimelea delicattda Lx., is described. 



ProteacecR (8 species) 

 Certain seeds are described as Banksites lineatus Lx., while Lesquereux des- 

 cribes seven species ascribed to Lomatia, some of them looking very like Hydro- 

 phyllaceae of the Phacelia type; — thus, compare L. terminalis and L. tripartita 

 with Phacelia bipinnatifida, L. acutiloha with P. franklinii, or L. spinosa with P. 

 fimbriata. 



SantalacecB (i doubtful species) 

 Santalum americanum Lx. is a leaf with little character; it might just as well 

 be a Lepargyrcea. 



MoracecB 



Kirchner cites two species of Ficus, but one of them (F. haydenii Lx.) is a 

 Laramie species, while the other, also a Laramie species, was reported from Floris- 

 sant only on the strength of a fragment collected by Professor Cope; which, from the 

 figure, does not seem to be identical with the Laramie plant, though it looks like 

 a Ficus. Kirchner has figured a leaf from Florissant, which he refers to Ficus 

 haydenii, but it cannot possibly have anything to do with that species. Messrs. 

 Henderson and Ramaley found a leaf which has the appearance of Cinnamomum. 

 It is not "C. scheuchzeri " (Lx., Cret. and Tert. Fl., pi. xxxviii. f. 6), but I cannot 

 separate it from certain leaves attributed to C. affine by Lesquereux. Knowlton, 

 however, divides C. affine into two species, and by the characters he assigns, the 

 Florrissant leaf would belong to Ficus trinervis Elnowlton. 



Ulmacece (6 species) 

 Planera longijolia Lx. and its' variety myriccs folia are very abundant; Les- 

 quereux examined over 2,000 specimens. A Celtis has been named C. McCoshii 

 Lx. ; it is said also to occur in Uinta County, Wyoming. Of Ulmus there are sup- 

 posed to be four species; one is considered to be U. braunii Heer, a common species 

 of the European Miocene; the others were described as new. U. brownellii 

 looks to me too much like U. hillicR, but Lesquereux points out differences. 

 Betulacece (about 3 species) 

 Alnus cordata Lx. is described but not figured. A fragment from Florissant 

 is referred to A. kejersteinii (Goepp.) Ung. Betula is represented by two species. 



Salicacece (6 species) 

 Populus has several species. A narrow-leafed cottonwood is P. lesquereuxi 

 Ckll. {heerii Lx., not Saporta); the specimens are beautifully preserved. P. scud- 



