FLORA OF THE CHEYENNE SANDSTONE OF KANSAS. 



213 



short of comparison with the type sections. 

 There is some doubt as to whether it came 

 from the Cheyenne sandstone. I include it 

 merely for the sake of completeness. In the 

 case of Aiaucarloxylon prossen, which Pen- 

 hallow -" recorded from this region, the data 

 are so entirely uncertain that I omit any 

 further reference to it. 



Cupressinoxylon cheyennense is of some inter- 

 est, as Penhallow definitely remarks upon the 

 presence of growth rings, which is thus in 

 accord with my supposition that the region 

 had an arid climate and seasonal rainfall. 



Phylum ANGIOSPERMOPHYTA. 



Class MONOCOTYLEDONAE. 



Order POALES. 



Genus ARUNDO Linne. 



Arundo groenlandica Heer? 



Arimdo groenliindica Heer. Flora fossilis arctica, vol. 3. 



Abt. 2, p. 104, pi. 28, fiss. 8-11, 1874; vol. 6, Abt. 



2, p. 57. pi. 17, fig. 10, 1882: vol. 7, p. 18. pi. 54, 



figs. 1-3, 1883. 

 Brozzi, Soc. ital. sci. nat. Atti, vol. 31, p. 403. pi. fi, 



■fig. 5, 1888; Soc. geol. ital. Boll., vol. 10, p, 37(1, pi. 



16, fig. 3, 1831. 

 Berry, U. S. Geol. Survey Prof. Paper 84, p. 28, pi. 



4, fig. 7, 1914. 



Striated culms and fragments of long, linear 

 pointed leaves, 2 to 3 centimeters in width. 

 Veins numerous, fine, and parallel. 



This identification is queried because of the 

 general lack of individuality in remains of this 

 sort. They include the specimens from Belvi- 

 dere that Ward referred to as bamboo-like 

 stems in his discussion of Fcistmaiitelia. 



The species was described by Heer from 

 material ft)und in both the Atane and Patoot 

 beds of western Greenland. It was subse- 

 quently recorded by me from the Middendorf 

 arkose member of the Black Creek formation 

 in South Carolina and by Bozzi from the 

 Emscherian of Italy. Little reliance can be 

 placed upon records of remains of this sort, 

 however, which also resemble in a general way 

 the somewhat earlier forms referred by Schenk 

 and others to Eolirion. 



The Cheyenne sandstone localities are Cham- 

 pion (Wildcat) Draw, shales three-quarters of a 

 mile south of Belvidere (222) ; hills between 

 Spring Creek and Soldier, 4 miles northeast of 



" Penhallow, D. P., Riiy. Soc. Canada Trans.. 2il ser., vol. 6, sec. 4, 

 p. 77, 1901. 



Belvidere (2227) ; and Champion (.Wildcat) 

 Draw, right (east) bank half a mile south of 

 Belvidere ("Lanphier shales," 2228). 



Class DICOTYLEDONAE. 



Order SAPINDALES. 



Family SAPINDACEAE. 



Genus SAPINDOPSIS Fontaine. 



Sapindopsis variabilis Fontaine. 



Plate LV, figures 2-4. 



Sapindopsis rariahilis Fontaine, U. S. Geol. Survey Mon. 

 15, p.. 298, pi. 151, fig. 1; pi. 152, figs. 1, 4; pi. 153, 

 fig. 3; pi. 154, figs. 2-4; pi. 155, figs. 2-5, 1890; in 

 Ward, U. S. Geol. Survey Nineteenth Ann. Kept., 

 pt. 2, p. (190, pi. 1G9, fig. 9, 1899; U. S. Geol. Survey 

 Mon. 48, pp. 481, 482, 489, 532, pi. 114, fig. 2, 1906. 

 Berry, U, S. Nat. Miis. Proc, vol. .38, p. G41, 1910; 

 Maryland Geol. Survey, Lower Cretaceous, p. 4G9, 

 pis. 83, 84, 85, 1911. 



Sapindopsis parvifolia Fontaine, U. S. Geol. Survey Mon. 

 15, p. 300, pi. 154, fig. 6,1890. 



Eucahiplus rosilriana Ward, U. S. Geol. Survey Mon. 48, 

 p. 530, pi. 113, figs. 9, 10, 1906. 



Ficus myricoides Ward, idem, p. 531, pi. 112, fig. 12, 1906. 



Rogersia angusti/olia Fontaine, in Ward, idem, pp. 491, 

 510 (not p. 521), 1906. 



Leaves odd-pinnate, in some specimens even- 

 pinnate, with three pairs of lateral leaflets, 

 which may be opposite, although usually there 

 is a tendency toward a subopposite arrange- 

 ment, markedly so in several specimens. 

 Leaflets normally lanceolate, individuals of the 

 same leaf about of a size, usually markedly 

 decurrent, but variable in this respect. The 

 pro.ximal leaflets are always less decurrent than 

 tlie pair next above, and some even have short 

 petioles. The upper leaflets are remarkably 

 variable; some have an abnormal decurrent 

 wing which joins the inner lamina of the next 

 lower pair of leaflets; in others the rachis 

 entirely lacks a wing. The leaf may be termi- 

 nated abruptly by a pair of leaflets variously 

 coalesced, or the three apical leaflets may be 

 variously united, their laminae may be almost 

 symmetrical or markedly inequilateral, their 

 margins showing a tendency toward undula- 

 tion, and rarely a leaflet is divided into a basal 

 and an apical part by a sharp constriction on 

 one side near the middle of the blade. The 

 specimens range in size from the small forms 

 upon which Fontaine founded his species 

 S. ■parvifolia and which are L6 centimeters long 

 and 0.4 centimeter wide to forms which ap- 

 proach S. magnifolia in size and are 10 centi- 



