XXXV] SAMAROPSIS 349 



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

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

 of similar form are figured by Lesquereux 1 from Pennsylvania 

 as Cardiocarpus (Ptilocarpus) bicornutus. 



Samaropsis (Samarospermum) moravica (Helmhacher). This 

 type 2 (fig. 502, H) is characterised by the great length of the 

 wing-like 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 3 who records the species 

 from Upper Carboniferous and Permian rocks in France : it is 

 recorded also from several localities in Germany 4 . Seeds figured 

 by Potonie 5 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 6 from 

 the Westphalian of New Brunswick. The species is recorded by 

 Arber 7 from the Kent coalfield. 



Samaropsis emarginata (Goeppert and Barger). 



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

 Measures of Kilmarnock, Scotland 8 , 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 9 . 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 slightly 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. 



Lesquereux (80) A. PI. LXXXV. fig. 51. 2 Helmhacher (71). 



Zeiller (92 2 ) A. PL xv. figs. 9, 10. 



Geinitz (75) PI. i. figs. 10, 11; Weiss, C. E. (79) PI. m. figs. 1719. 

 Potonie (93) A. PL xxxn. figs. 12, 13. 6 Stopes (14) PL xxv. fig. 68. 



Arber (14) PL vi. figs. 19, 20; (14 2 ) PL xi. fig. 5. 



8 For synonymy, see Kidston (11) p. 238, PL xxii. figs. 3, 3 a. 



9 Fiedler (57) p. 291. 



