British Coal Measures . 
97 
Cornucarpus acutus (Lind. & Hutt.) (PL VI, Fig. 14 and Text-fig. 2). 
Type Cardiocarpus acutus , Lindley and Hutton, ‘ Foss. Flora/ vol. i, 
p. 209, PI. LXXVI, 1833. Recorded from the Transition Coal Measures of 
Kent, the Middle Coal Measures of Leicestershire, and the Lower Coal 
Measures of the Newcastle, Ayrshire, and Lanarkshire coalfields. 
Text- fig. 2. Cornucarpus acutus (L. & H.). x 2. 
Seed triangular, about 6-10 mm. long, with a broad apex, and two well- 
marked horns at the angles of the apex. A median ridge extending from 
apex to base is prominent on most specimens. Testa smooth. 
Genus Cardiocarpus, Brongniart, 1828. 
Seeds small, heart-shaped or reniform, rounded or emarginate at base, 
more or less acute at apex, not winged, with or without a narrow, marginal 
rim. 
(1) Cardiocarpus congruens , Grand’ Eury (Text-fig. 3). 
Text-fig. 3. Cardiocarpus congruens , G.’ E. After Grand’ Eury. 
Type Cordaicarpus congruens , Grand’ Eury, ‘Flore Carbon. Loire/ 
p. 236, PI. XXVI, Fig. 2i, 1 877. Recorded from the Middle Coal Measures 
of Warwickshire. 
Seed small, 6-10 mm. long, apex obtuse. Testa smooth. 
(2) Cardiocarpus Gutbieri , Gein. (PL VI, Fig. 1 5). 
Type Cardiocarpon Gutbieri , Geinitz, ‘ Vers. Steinkohlenf. Sachs./ 
p. 39, PL XXI, Figs. 23-25, 1855. Recorded from the Upper Coal Measures 
of Radstock, and the Middle Coal Measures of Yorkshire and North 
Staffordshire. 
Seed of medium size, as broad as long or longer than broad, from 
1-2 cm. across, heart-shaped, bluntly pointed at the apex, with or without 
a very narrow, marginal rim. 
Genus Samaropsis, Goeppert, 1864. 
Platyspermic seeds, small or of medium size, more or less circular, not 
longer than broad, with a sclerotesta, and a well-developed sarcotesta forming 
a well-marked wing. Sclerotesta usually heart-shaped or ovate. Sarco- 
