﻿Vol. 64.] PERMO-CARBONIPEROUS PLANTS FROM VEKEENIGIlSrG. 121 



complete ; the lamina gradually broadens below the apex, reaching 

 a maximum breadth about 23 centimetres from the tip ; the narrow 

 base is 2-8 centimetres wide. Fig. 9 shows an even better spe- 

 cimen from the Museum of the Geological Society of South Africa 



Figs. 9 & 10. — Cordaites Hislopi 



(jig. 9 is about ^, and Jig. 10 

 is about X natural size). 



at Johannesburg : it is 60 centi- 

 metres long ; the apex is some- 

 what obtuse, and the narrow base 

 is preserved intact. The veins 

 are not very clearly preserved ; 

 they are numerous, and in the 

 broader part of the lamina 

 slightly inclined towards the 

 edge of the lamina. 



The genus Nceggerathiopsis is 

 abundantly represented in India, 

 New South Wales, South America, 

 and other regions.^ The highest 

 horizon from which it has been 

 recorded is represented b}^ the 

 Eh^tic of Tongking.' The 

 Tongking examples are smaller 

 than those from South Africa, 

 but in other respects they ap- 

 pear to be identical : in that 

 region, as in others, the leaves 

 occur in association with Gymno- 

 sperm-seeds. Prof. Zeiller, while 

 placing Nceggerathiopsis in the 

 Cordaitales, prefers to preserve its 

 generic identity on the grounds 

 that (i) the fine longitudinal 

 lines which occur between the 

 veins of a Oordaites-\e2ti are not 

 found in Nceggerathiopsis ; and 

 (ii) the stomata do not occur in 

 regular lines as in Cordaites^ 

 but are scattered irregularly 

 between the veins.^ 



The Yereeniging specimens do 

 not enable us to pronounce an 

 opinion on these characters, but 

 they do not seem to us to con- 

 stitute a serious objection to the 

 use of a commou generic name. 

 The striking agreement between 

 Q Tq the leaves of Nceggerathiopsis 



and Oordaites, together with their 

 frequent association with Gymnosperm-seeds, favours the adoption 



^ Arber (06*) p. 183. '-^ Zeiller (03) p. 149 & pi. xl. 



3 Zeiller (03) p. 153 ; see also Zeiller (02) p. 31. 



