XXXV] SAMAKOPSIS 349 



is characterised by a greater development of the flat wing-hke 

 border which is divided into two long tapering basal lobes. Seeds 

 of similar form are figured by Lesquereux^ from Pennsylvania 

 as Cardiocarpus (Ptilocarpus) bicornutus. 



Samaropsis (Samarospermum) moravica (Helmhacher). This 

 type^ (fig. 502, H) is characterised by the great length of the 

 wing-hke border and on that account it was transferred by Arber 

 to a new genus. It was originally described by Helmhache 

 from the Permian of Moravia as Jordania moravica and the type- 

 specimen has been re-figured by Zeiller^ who records the species 

 from Upper Carboniferous and Permian rocks in France: it is 

 recorded also from several locahties in Germany*. Seeds figured 

 by Potonie^ from the Permian of Thuringia as Samaropsis Crampii 

 (Hartt) are undoubtedly examples of S. moravica: the true 

 S. Crampii has recently been well illustrated by Dr Stopes* from 

 the Westphahan of New Brunswick. The species is recorded by 

 Arber' from the Kent coalfield. 



Samaropsis emarginata (Goeppert and Barger). 



The seed represented in fig. 502, B, from the Lower Coal 

 Measures of Kilmarnock, Scotland®, affords a good example of 

 the genus: the species was originally described by Berger as 

 Cardiocarpon emarginatum and it was on this type that Fiedler 

 founded the genus Cyclocarpon^ It has been referred by many 

 authors to Cardiocarpon and might be regarded as a type inter- 

 mediate between Cordaicarpus, as used in this chapter, and 

 Samaropsis, though the breadth of the border is more in keeping 

 with the latter designation. The figured specimen is 1-6 cm. long 

 and 1-4 cm. broad ; the nucule has a shghtly cordate base and 

 shows several faint converging ribs which are too inconspicuous 

 to be represented in a natural-size drawing. A narrow median 

 groove in the apical region shows the position of a vascular strand. 



1 Lesquereux (80) A. PI. Lxxxv. fig. 51. ^ Helmhacher (71). 



3 ZeiUer (92^) A. PI. xv. figs. 9, 10. 



* Geinitz (75) PI. i. figs. 10, 11; Weiss, C. E. (79) PI. m. figs. 17—19. 

 5 Potonie (93) A. PI. xxxii. figs. 12, 13. " Stopes (14) PI. xxv. fig. 68. 



' Arber (14) PI. vi. figs. 19, 20; (14^) PI. XI. fig. 5. 

 " For synonymy, see Kidston (11) p. 238, PI. xxii. figs. 3, 3 o. 

 .9 Fiedler (57) p. 291. 



