412 PROCEEDINGS OF THE INDIANA ACADEMY OF SCIENCE. 



sear and parichnos prominent in lower part of sear; ligular pit obsure; ap- 

 pendages rather large and prominent. 



This tree appears to belong to a group of Lepidodendra with nominally 

 transersely wrinkled bolsters to which belong L. Brittsii and L. Worthcni 

 and possiblj' L. Choclaivense. It differs from those sp?eies in that the wrinkles 

 appear to be more pronounced, the subjacent lateral appendages are pres- 

 ent, the bolsters are more sharply pointed and the leaf scars are proportiona- 

 ally smaller. 



Locality: Yoho School. Rather common. 



Lepidodendron ohovalutn Sternb. 

 Plate VII. fig. 7; PI. VIII, figs. 1, (5; PL IX, fig. 15. 



lcS2(). Lepidodendron obovalum Sternburg, Ess. Fl. monde prim., I. fase. 1, 

 pp. 21-25, pi. VI, fig. 1; PI. VIII, fig. la, 11>; fasc. 4. i). x. Renault, 

 Cours. hot. foss., II, p. 13, pi. VI, fig. 5. 

 1879. Lepidodendron dichotomuni. L.x. (non Sternb.), (\)al Flora. Atlas, 



pi. LXIV, fig. 3, text, pp. 384-385. 

 1886. Lepidodendron obovalum Sternburg. Zeiller, Bassin houiller de 

 Valencien. Atlas, pi. LXVI. figs. la. 8, text (1888), pp. 442-446. 

 The majority of the forms assigned to this species were in a poor state 

 of preservation, lieing in most instances considerably distorted or decorti- 

 cated. The plant shown in pi. VI, fig. 17, is possibly a better representation 

 of the species than those from other localities. 



Localities: Yoho School, Bowling Green, Roadman School and Asher- 

 ville. 



Lepidodendron clypealum Lx. 



PI. V, fig. 7; pi. VI, fig. 15. 



1854. Lepidodendron ch/pealum Lesquereux, Jcnir. Bost. Soc. Nat. Hist., 



Vol. VI, p. 429. 

 1879. Lepidodendron clypealum Lx., Coal Flora, Atlas, p. 12, ])1. LXIV, 



figs. 16, 16a, 16b; text. Vol. II (1880). p. 380. 

 1899. Lepidodendron rhjpcaluni Lx., While, D., Fossil Flora of the Lower 



Coal Measures of Missouri, U. S. G. S. Monograph Vol. 37, p. 201. 

 This species was common in both the Yoho School and Cincinnati lo- 

 calities. The form figured from the former locality has bolsters with sides 

 more nearly equilateral than the Pennsylvania plants described and figured 

 by Lesquereux. The appendages are also a little larger than in the Penn- 

 sylvania forms. The form of the bolsters of the plant shown in PI. VI, 

 fig. 15, more closely resembles the Pennsylvania forms. The latter speci- 

 men is a sandstone mold; consequently the characteristic markings of the 

 species are more or less obliterated. 



Localities: Yoho School, Cincinnati. 



