﻿Yol. 64.] 



rOSSIL PLANTS FKOM SOUTH AFRICA. 



9^ 



mously-branched and simple veins given off al right angles to 



a prominent midrib. 



Fig. 6. — Tseniopteris Carruthersi, 

 Ten. Woods^ natural size. 



The example shown 

 in fig. 6 has a broader 

 lamina than any spe- 

 cimen so far figured 

 from South Africa. 

 Fragments of Thinn- 

 feldia and Gtenopteris 

 occnr in association 

 with the Tceniopteris- 

 leaves. 



A specimen from the 

 Burghersdorp Beds of 

 the Indwe River ap- 

 pears to be indistin- 

 guishable from the 

 Molteno fragment. 



T, virgulata'^ from 

 Tongking and T. im- 

 mersa " from Scania 

 may be compared with 

 the type from South 

 Africa ; also forms 

 from India and else- 



where described as species of Macrotceniopteris. 



GINKGO ALES. 



Genus Baiera. 

 Baiera moltenensis, sp. nov. (PI. II, fig. 4.) 



In view of the variation observed in the form of the leaves of the 

 recent species Ginkgo hiloba^ it is hopeless to attempt to discriminate, 

 within narrow limits, between the numerous fossil examples of the 

 genera Ginkgo and Baiera. The leaf represented in PI. II, fig. 4 

 bears a close resemblance to leaves described from Jurassic and 

 Ehaetic rocks ; but, as it differs from any of the specimens hitherto 

 recorded from South Africa, it is convenient to make use of a new 

 designation. A slender petiole terminates in a deltoid lamina, 

 dissected into forked linear segments with numerous dichotomously- 

 branched veins. 



The only specimen in the collection (PL II, fig. 4) was obtained 

 from the Molteno Beds, 2 miles north of Dordrecht (Cape Colony). 

 In the form of the lamina it agrees with the Jurassic species 

 Baiera Phillipsi,^ but it is no doubt specifically distinct therefrom ; 



1 Zeiller (02) pi. xiv. 



2 Nathorst (78) p. 87 & pi. 

 ^ Seward (00) pi. ix, fig. 4. 



6. 



H 2 



