XXX V] SAMAROPSIS 351 



sent to Dr Kidston by Mr Claypole. The whole seed is 5 cm. 

 wide and 3-5 cm. in depth ; it is characterised by a short and 

 relatively broad nucule surrounded by a very broad and flat 

 border showing faintly marked radially disposed lines and in 

 places some irregularly distributed pits. The apex is emarginate 

 and there is a broad and deep sinus in the sarcotesta in the chalazal 

 region. The seed resembles Samaropsis alata Kidst. 1 and S. 

 Baileyi (Daws.) 2 but it differs from these in the greater breadth of 

 the 'wing' and in the form of the nucule. 



The seed described by Fiedler 3 as Jordania bignonioides (fig. 

 502, I) agrees closely with S. alata Kidst. but is probably speci- 

 fically distinct. 



Samaropsis barcellosa (White). 



White 4 described this species (fig. 502, G) from Permo-Carboni- 

 ferous rocks in Brazil (Rio Grande do Sul) as Cardiocarpon barcel- 

 losum. The nucule is said to be cordate but, as seen in the figure, 

 there is no clear indication of a basal sinus: the presence of a 

 relatively broad ' wing,' as White says, entitles the seed ' to a place 

 in the Samaropsis section of the genus.' The author of the species 

 compares it with seeds described from Westphalian rocks in 

 Ohio 5 and Pennsylvania 6 . It is interesting to find a type which 

 is common in both Europe and North America in the western 

 portion of Gondwana Land. Seeds of similar form are recorded 

 also from India, South Africa, and Australia 7 . 



Samaropsis Seixasi (White). 



This Brazilian species from the same beds is described by 

 White as Gangamopteris (Samaropsis) Seixasi* : it is characterised 

 by a small ovate nucule 8 10 mm. long and 5 mm. broad, in some 

 specimens surrounded by a complete ' wing ' extending above the 

 apex and below the base, giving the seed an appearance similar to 



Kidston (11) p. 239, PI. xn. fig. 1. 

 Dawson (71) A. PL xix. fig. 219; Stopes (14) p. 92. 

 Fiedler (57) PL xxvm. fig. 36. 

 White (08) B. p. 567, PL x. fig. 11. 



Newberry (73) PL XLHI. fig. 8; Lesquereux (80) A PL LXXXV. figs. 36, 37. 

 Lesquereux (84) A PL Cix. figs. 13, 15. 

 Seward (97 2 ) A p. 332; Arber (05) B. pp. 206, 207. 

 * White (08) B. p. 559, PL x. figs. 58. 



