100 EXPLANATION OF THE PLATES. 
LY COPODIACEA. 
LEPIDODENDRE/. 
Fia. 4.—a, b. LEPIDODENDRON STERNBERGU, Brongniart. 
Brongt. Prod., p. 85. JZ. elegans, Brongt. Hist. Vég. Foss. ii., pl. xiv. 
L. gracile, 1b., pl. xv. DL. Sternbergu, L. acerosum et dilatatum, 
Lindl. and Hutt., vol.i., pl. iv. and vii., figs. 1, 2. Schimper, Pal. 
Végét., vol. ii., part 1., p. 19. 
a. Reduced to half natural size. From‘Brong. Vég. Foss., Liv. 14, pl. xiv. ; 
portion of fig. 2. 6. Scales, from do., fig. 1, A. 
Coal shale. ‘‘In the shales of almost all the coal basins of Europe and 
America.” Sch. Pal. Vég., vol. ii., part 1, p. 20. 
SIGILLARIEZ. 
Fic. 5.—a, 6. SIGILLARIA TESELLATA, Brongniart. 
Hist. Vég. Foss., p. 436, pl. clvi., fig. 1. Favularia tessellata, Lindl. and 
Hutt. Foss. F!., vol. i., pl. lxxiii.—Ixxv. Sch. Pal. Vég., vol. i1., part 1, 
iol. 
Ovisinal: a. Base of Trunk with roots (Stigmaria), much reduced in size. 
b. Hexagonal leaf scars; from Vég. Foss., pl. clxii., fig. 6. 
Coat Measures; SHALEand Sanpstony.—Very abundant in British Coal- 
field, as well as in those of Germany and North America. 
