LANCE FLORA OF EASTERN WYOMING 139 



Laurophyllum meeki Dorf 



Laurophyllum meeki Dorf, Carnegie Inst. Wash. Pub. No. 508, pt. I, 60, pl. 7, fig. 5, 1938. 



Diospyros? ficoidea Lesquereux (in part), Rept. U. S. Geol. Surv. Terr., vol. 7, 231, pl. 40, fig. 6 only, 1878. 



Daphnogene elegans Watelet. Ward, U. S. Geol. Surv. 6th Ann. Rept., 553, pl. 47, fig. 4, 1885; U. S. Geol. 



Surv. Bull. 37, 51, pl. 35, fig. 1, 1887. 

 Ficus crossii Ward. Knowlton, U. S. Geol. Surv. Prof. Paper 130, 139, pl. 11, fig. 2, 1922. Dorf, BuU. Geol. 



Soc. Amer., vol. 51, 218, 222, 225, 1940. 



There are 4 well-preserved .specimens which were misidentified as Ficus crossii because of 

 their similarity to the Laramie specimen which Knowlton had referred to that species. I had 

 previously regarded the Laramie specimen as more probably referable to Rhamnus goldianus 

 Lesquereux ' and certainly not to Ficus crossii. On the basis of further studies with the type 

 specimens at the U. S. National Museum, however, it has become evident that the Laramle 

 specimen, as well as those of the type Lance, cannot be distinguished from the type specimens of 

 Laurophyllum meeki or its synonymous forms. The leaves of Rhamnus goldianus were found to 

 be uniformly of thinner texture, with more closely spaced secondaries and with more numerous, 

 parallel tertiaries. 



As here interpreted, Laurophyllum meeki is known from the Black Buttes, Medicine Bow, 

 Laramie, and type Lance floras. Its resemblance to existing lauraceous leaves has already been 

 pointed out in my original discussion of the species. 



Occurrence — Locality P3853. 



CoUection—V. C. Mus. Pal., No. 2509. 



Laurophyllum salicifohum (Lesquereux) Dorf, n. oomb. 

 (Plate 9, Fig. 5) 



Rhamnus salicifolius Lesquereux, Amer. Jour. Sci., 2d ser., vol. 45, 206, 1868; U. S. Geol. and Geog. Surv. Terr., 



Ann. Rept. (1869), 196, 1873 (reprint); Rept. U. S. Geol. Surv. Terr., vol. 7, 282, pl. 53, figs. 9, 10, 1878. 



Knowlton, U. S. Geol. Surv. Prof. Paper 101, 271, 1917; U. S. Geol. Surv. Prof. Paper 130, 154, pl. 15, fig. 



4, pl. 19, fig. 26, 1922. Dorf, Carnegie Inst. Wash. Pub. No. 508, pt. I, 66, pl. 12, figs. 4, 5, pl. 13, fig. 4, 



1938; BuII. Geol. Soc. Amer., vol. 51, 218, 222, 225, 1940. 

 Rhamnus salicifolius Lesquereux?. Knowlton, U. S. Geol. Surv. BuII. 163, 70, 1900; U. S. Geol. Surv. Prof. 



Paper 155, 107, pl. 46, fig. 12, 1930. 

 Rhamnus belmonlensis Knowlton and Cockerell, U. S. Geol. Surv. Bull. 696, 544, 1919. Knowlton, U. S. Geol. 



Surv. Prof. Paper 130, 155, 1922. 

 Rhamnus elegans Newberry, Ann. New York Lyc. Nat. Hist., vol. 9, 49, 1868; U. S. Geol. Surv. Mon. 35, 117, 



pl. 50, fig. 2, 1898. 

 Juglans laramiensis Knowlton, U. S. Geol. Surv. Prof. Paper 130, 120, pl. 20, fig. 12, 1922. 

 Ficus? smilhsoniana (Lesquereux) Lesquereux ?. Knowlton, U. S. Geol. Surv. Prof. Paper 130, 130, pl. 21, 



fig. 4, 1922. 

 Laurus lanceolala Knowlton, U. S. Geol. Surv. BuU. 696, 346, 1919; U. S. Geol. Surv. Prof. Paper 130, 143, pl. 



21, fig. 7, 1922. Brown, U. S. Geol. Surv. Prof. Paper 189, 250, pl. 53, fig. 6, 1939. 



This well-defined leaf form is rare in the Lance Creek collections, being represented by only 

 5 specimens from three localities. A full description and discussion of this species has been given 

 in my report on the Medicine Bow flora. The inclusion of the specimens of Laurus lanceolata 

 in this species is here made on the basis of further consultation of the collections at the U. S. Na- 

 tional Mufseum. These collections were found to contain also the following unidentified speci- 

 mens which I believe belong to this species: 1 nearly perfect specimen in the Laramie collection 

 (No. 130), and 3 specimens in the Vermejo collection (Nos. 34502, 51154, 254). The species was 

 reported and figured previously from both these formations. 



As I have previously pointed out, these fossil leaves are distinctly not rhamnaceous, but are 

 difficult to distinguish from several living species of Persea and Neclandra of the Lauracese. The 

 resemblance to this family is accordingly indicated by referring the species to the genus Lauro- 

 phyllum. 



Occurrence— Localities P3854, P3857, P3859. 



Collection—V. C. Mus. Pal., Plesiotype No. 2510. 



' Dorf, E., Carnegie Inat. Waah. Pub. No. 508, pt. I, 56, 1938. 



