FLORA Ui' THE CHEYENNE SANDSTONE OF KANSAS. 



209 



records all represent the same species, it was 

 evidently a wide-ranjiiiig ty[)e in tlie earliest 

 stage of the Upper Cretaceous, wliich spread 

 from the Arctic region southward into North 

 America, Europe, and Asia. There are five 

 specimens in the Cheyenne sandstone that 

 appear to be identical with Heer's Greenland 

 forms, but as they are preserved in a coarse 

 sandstone their detailed characteristics are 

 obliterated. The pinnules arc coriaceous, long, 

 and narrow and somewhat resemble what 

 Heer " called illeicJiema rigida. 



Although details of frond habit and fructifi- 

 cation are lacking I have ventured to transfer 

 this form from Pecopteris to Gleichenia, as it 

 appears to be congeneric with the numerous 

 Cretaceous forms of that genus. 



It was found in the Cheyenne sandstone on 

 the left bank of the middle branch of Cham- 

 pion (Wildcat) Draw, half a mile south of 

 Belvidere (2229). 



Phylum CYCADOPHYTA. 



Order CYCADEOIDALES. 



Genus CYCADEOIDEA Buckland. 



Cycadeoidea munita Cragin. 



Cycadeoitlea munita Crasriii. Washburu College Lab. Nat. 

 Hist. Bull., vol. 2, p. 6.5, 1889. 

 Ward, U. S. Geol. Sur\'ey Nineteenth .\nii. Kept., 

 pt. 2, p. 541, 1899. 



Hill -^ states that there is some doubt as to 

 the occurrence of tliis specimen at tliis horizon. 

 Lester F. Ward, who subsequently visited the 

 locality, states that he was satisfied that it 

 could not have come from the Cheyenne sand- 

 stone but may have weathered out from the 

 overlying '"Reeder sandstone." The material, 

 which is only a fragment, has never been 

 studied by a competent person, although 

 Ward states that it is surely a fragment of a 

 cycad trunk. 



Whatever its true horizon it is of interest as 

 one of the latest authentic occurrences of this 

 type of plant. 



Genus CYCADEOSPERMUM Saporta. 

 Cycadeospermum lineatum Lesquereux. 



Cycadeopsermum Unealum Leaquereux, U. S. Geol. Survey 

 Mon. 17, p. 30, pi. 1, fig. 14, 1891 [1892]. 



This seed, which was found 10 miles north- 

 east of Delphos, Ivans., was described by 

 Lesquereux as foUows: 



2= Heer, Oswald, Flora fossills arctica, vol. 1, p. SO, pi. 44, fig. 1, 1S6S. 

 » Hill, R. T., Am. Jour. Sci., 3d ser., %-ol. 50, p. 21-.i, lS9o. 



Seed oblong-ovate, slightly falcate, rounded at the 

 lower end, short acuminate at the other; testa smooth, 

 transversely lineate, the lines distant, parallel; carena 

 clearly marked longitudinally on both sides, the inner 

 concave, the outer rounded. 



Length 1 to 1.5 centimeters; width about 

 6 millimeters, somewhat compressed. Testa 

 thick, shining, and ligneous. 



Cycadophyte seeds are not so inequilateral, 

 and the present form is probably angiosperm- 

 ous. This genus was proposed for Jurassic 

 forms, of which many have been described. 

 A few have been described from both Lower and 

 Upper Cretaceous material. The Cheyenne 

 form is certainly identical with Lesquereux 's 

 type. Wliether or not it is congeneric with 

 the other species referred to Cycadeospermum, 

 or whether indeed it represents the seed of a 

 cycadophyte and not an angiosperm, can not 

 be determined. My impression is that it 

 belongs to the latter rather than the former. 



Material identical with Lesquereux's type is 

 found in the Cheyenne sandstone IJ miles 

 northwest of Belvidere (221S) and near Medi- 

 cine Lodge Creek. 2 miles west of Belvidere 

 (2224). 



Phylum CONIFEROPHYTA. 



Order CONIFERALES. 



Family CUPRESSINACEAE. 



Genus SEQUOIA Endlicher. 



Sequoia condita Lesquereux. 



Plate XLVIII, figures 1-11. 



Sequoia condita Lesquereux, U. S. Geol. and Geol. Survey 

 Terr. Bull., vol. 1, p. 391, 1875 [1876]; Ann. Rept. 

 for 1874, p. 355, pi. 4, figs. 5-7, [1876]; U. S. Geol. 

 Surv'ey Terr. Rept., vol. 8 (Cretaceous and Tertiary 

 floras'), p. 32, pi. 1, figs. 5-7, 1883; in Cook and 

 Smock, Rejwrt on clay deposits in New Jersey, p. 

 29, 1S78. 



The inextricable confusion that results from 

 the identification of detached fragments of conif- 

 erous foliage when they can not be checked 

 by fruits or in some other way is well illustrateil 

 by the forms that are variously referred to 

 Ghjptostrohus (jracUlimus Lesquereux, Sequoia 

 (jracilUma Newberry. WiddriiKjtoiiites reichii 

 Heer, etc. In volume 6 of the final reports of 

 the United States Geological Survej" of the 

 Territories Lestjuereux gave figures of a plant 

 which he had named some years earlier Ghjpto- 

 strobus (jraciUintus and which he compared with 

 Frenelites reichii of Ettingshausen. When 



