THE DESCRIPTION AND STRATIGRAPHIC RELATIONSHIPS. 415 



Arkansas fossils described and figured by Lesquereux. A slight difference 

 is noted, however, in that the pinnules are a little more deeply lobed and 

 more blunt than in Lesquereux's figures. ^ 

 Locality: Yoho School. 



Genus Mariopteris Zeiller 



Mariopleris muricata Schlotheim 



PI. n. Fig. 2. 



1880. Pscudopecopleris muricata Brongn. Lesquereux, Coal Flora, Vol. 



L p. 203, pi. XXXVII, fig. 2. 

 1886. Mariopleris muricata (Schlotheim). Zeiller, Bassin houiUer de 

 Valenciennes. Description de la Flora Fossile. Atlas, pi. XX, 

 fig. 1-4; pi. XXI, fig. 1; pi. XXII, figs. 1, 2; pi. XXIII, fig. 1; Text, 

 (1888) p. 173. 

 The plant shown in pi. II, fig. 2, agrees very closely with the European 

 form figured by Zeiller*^ as M. muricata Sch. var. hirta Stur. 

 Locality: Yoho School. 



Mariopteris decipiens Lx. 

 PL IV, fig. 7; PI. V, fig. 4. 



1860. Sphenopteris dilalata Lesquereux, 2nd. Rept. Geol. Surv. Ark. 



pp. 310-315, pi. II, figs. 3, 3a. 

 1879. Pseudopecopleris decipiens Lesquereux, Coal Flora, Atlas, PL 



LII, figs. 9?, 10, 10a, text (1880), p. 214. 

 1895. Mariopteris {Pseudope copter is) decipiens Lx. White, David, Flora 



of the Outlying Carboniferous Coal Basins of Southwestern Missouri, 



Bui. 98, U. S. G. S., p. 47, pi. I, figs. 5-8, 5a; pi. II, figs, 1-3, 3a. 

 This species was represented principally by detached pinules. Those 

 fragmentary specimens have pinules that differ slightly in shape from the 

 Missouri forms in that they are more restricted at the base and have a greater 

 number of lobes. They closely resemble the Arkansas^ forms figured by 

 Lesquereux. The form shoAvn in PL IV, fig. 7, is close to the Pennsylvania 

 forms. ^ 



Locality: Yoho School. 



Coal Flora, Vol. Ill, PI. 765, p. CIII, figs. 4-5a. 

 * Ba.sin Houiller de Valenciennes, Flore Fos.sile, Atlas, pl. XX, fig. 4. 

 ' 2ncl Geol. Surv. Ark., PI. II. figs. 3, :ia. 

 s Coal Flora, p. 214, Atlas, pl. LIT, figs, y? 10, 10a. 



