428 University Geological Survey of Kansas. 
GYMNOSPHRM A, 
CORDITALES. 
Cordaites UNGER. 
Cordaites communis Lx. Pl. LIX, fig. 2. 
Cordaites communis Lesquereux, Proc. Amer. Phil. Soc., vol. 17, 
p. 320; David White, Flora Lower Coal Measures of Missouri, 
p. 260, pl. 3, fig. 1; pl. 16; pl. 46, 1899. 
Leaves long, spatulate, when mature over 30 cm. in length; 
gradually narrowed to a semicircular clasping base, gradually 
widened upward, broadest part a little below the apex, 314 
or more cm. Primary nerves prominent at the base, 15 to 18 
per centimeter, interstrize numerous, apex of the leaf obtusely 
rounded. 
The species is fairly abundant in the Le Roy shales at Blue 
Mound. The basal part of the large leaf, figure 2, plate LIX, 
seems to indicate a form with more slender base than that 
found in the Lower Coal Measures at Clinton, Mo., as figured 
by White, loc. cit. 
Cordianthus GRAND ’HurRY. 
Cordianthus ovatus Lx. 
C. ovatus is found in the Cherokee shales at Lansing and is 
particularly abundant in the Le Roy shales. It is found also 
in the Scranton shales. 
Cordianthus sp. Pl. XLVII, fig. 10. 
A small Cordianthus occurs in the Bethany Falls limestone 
near Kansas City. 
Trigonocarpum BRONGNIART. 
Trigonocarpum schultzianum Goep. and Berg. Pl. LII, fig. 1; pl. LVIII, 
fice. 3. 
Numerous specimens of this species have been obtained from 
the Le Roy shales. These are 4 to 5 cm. long, 1 to 2 cm. wide, 
and have four or five coste on a side. A seed, apparently of 
the same species, found at Lansing, is oblong, narrowed both 
to base and apex, the broadest part being about or a little below 
the middle. The costz are indistinct; five or six are seen on 
the side. The original fleshy covering is represented by a dis- 
tinctly coaly layer having a thickness of 2 cm. and traceable en- 
tirely around the seed. 
Formation and locality: Cherokee shales, Lansing; Le Roy 
shales, Lawrence. 
