122 



LARAMIE FLORA OF THE DENVER BASIN. 



note of explanation then given is as follows:" 

 " Very nearly related to J . acuminata Al. Braun, 

 a species extensively distributed in the Euro- 

 pean Miocene."' This note was copied without 

 change by Harden "^ in 1SG9, and the species 

 was alluded to in several other Hayden reports, 

 but npt until 1878 "^ was it really described and 

 figured. Now, another complication is intro- 

 duced with the describing and figuring of this 

 species. The original locality of Marshall 

 for Juglans rugosa is nowhere mentioned in 

 the '"Tertiary flora," and, so far as knowTi, 

 none of the original specimens are extant. The 

 diagnosis and figures in the "Tertiary flora" 

 arc baseil in the main on material from Evans- 

 ton, Wyo., obtained "above the coal." Of the 

 13 figured specimens of Juglans rugosa, 11 are 

 now in the collection of the United States 

 National Museum, the missing ones being the 

 originals of Les(|uereux's Plate LIV, figure 5, 

 and Plate L^'I, figure 1. Both these specimens 

 are said to have come from Golden, Colo., 

 though whether from Laramie or Denver beds 

 can not be ascertaineil. 



In order that there may be less trouble in 

 future in identifying these type specimens, the 

 following list is given of their illustrations in 

 the ''Tertiary flora" and the corresponding 

 numbers in the United States National Museum 

 catalogue : 



Catalogue No. 



Plat." I. IV, figure 14 454 



Plate l.V, ligure 1 851 



ligure 2 4.55 



figure 3 4.55a 



figure 4 45fi 



figure 5 457 



figureG 458 



figure? 460 



figure 9 459 



Plate LVl, figure 2 46;J 



Of tlicse specimens Nos. 45o, 455a, 457, 458, 

 459, 461, and 851 are from Evanston, Wyo., 

 'and are so recorded in the Museum catalogue. 

 No. 4G0 is recorded as beifig from Golden, 

 Colo., but attached to the specimen is a small, 

 obscure original label which states that it also 

 is from Kvanston, and as it agrees perfectly 

 with the matrix of the other specimens this 

 lal)el is probably correct. No. 456 is said to be 

 from Point of Rocks, Wyo., but the matrix is 



a Am. Joiw. Sci., 2d ser., vol. 45, p. 206, 18fi8. 

 II V. S. Oool. Survey Terr. Third Ann. Rept. [reprint, 187.1|, p. Itf '.. 

 •» Lc3qucrcux, Leo. ThcTcrti.iry (lora: U.S. (ieol. Survey Terr. Uept., 

 vol. 7, p. 280, pi. 54, figs. 5, 14; pi. 35, figs. 1-9; pi. ii, llgs. I, 2, 187K. 



also like that of the Evanston specimens and 

 unlike that ordinarily found at Point of Rocks, 

 though we are confronted by the fact that it 

 bears an original label recording it from the 

 latter locality. This species was not recog- 

 nized in my "Flora of the Montana formation," "^ 

 and it is probably safe to exclude it from 

 Point of Rocks. It has, however, been found 

 subsequently at many localities, such as 

 Golden, Colo., in beds of Denver age; Carbon, 

 Wyo., in the "Upper Laramie" of Veatch; 

 many points in southern Colorado and north- 

 ern New Mexico, in the Raton formation: the 

 Bozeman coal field of Montana; and Black 

 Buttes, Wyo., in beds believed by me to be 

 of post-Laramie age. 



From the above account it appears that, 

 although named from material of Laramie age 

 at Marshall, Juglans rugosa as it has come to 

 be known is based on described and figured 

 material from higher or post-Laramie horizons. 

 There is no means of knowing just what the 

 original Marshall leaves were like, beyond the 

 fact already mentioned that they are said to 

 resemble Juglans acuminata. It is for these 

 reasons that Juglans rugosa is excluded from 

 the Laramie flora. It appears to be essentially 

 a Tertiary species, and its occurrence in Cre- 

 taceous beds must be left open to subsecjuent 

 discoveries. 



There is, of course, no certainty that the 

 leaflets here described as Juglans pracrugosa 

 are the same as the form to which Lescjuereux 

 gave the name of J. rugosa, and in fact they 

 do not differ from it very markedly. The 

 leaves of J. praerugosa seem to have been 

 thinner and do not appear particularly rugose. 

 As a matter of fact, better material is needed 

 before it can be completely diagnosed. 



Occurrence: l^nrainic formation. Marsliall 

 mine, Marshall, Colo., collecteii by Arthur 

 Lakes, 1890. 



Hicoria angulata Knowlton, n. up. 



Plate V, figure 4. 



Hicoria aiiijulata Knowlton [nomen nudum], I'. .S. Geol. 

 Survey Bull. lJ!)(i. p. :il9, 1919. 



Fruit ovoid, truncate at base, obtusely 

 pointed at apex, strongly several-angled (prob- 

 abl}' four) or ridged. 



This beautifully preserved fruit is well 

 shown in the figure. It is 22 millLmetei-s long 



« U. S. Oeol. Survey Bull. 163, 1900. 



