Fossil Floras of Cape Colony. 65 



paratively few in the lower part of the lamina, but after repeated 

 dichotomy they become more numerous in the upper part of the 

 leaf, where they occur as crowded parallel veins slightly converging 

 towards the tips of the narrow terminal segments. The whole 

 lamina reached a length of 12 cm. or more and probably a breadth 

 of 10 cm. 



I have given a new specific name to the unusually large type of 

 leaf represented in pi. viii., fig. 3 ; it might with equal propriety 

 be included in the genus Ginkgo, as one occasionally finds large and 

 deeply lobed leaves of the Maidenhair tree very similar to the example 

 shown in the figure.''' 



The species described by Feistmantel from the Stormberg beds as 

 Baiera schenkif may be merely a smaller form of B. storiubergensis, 

 but the much greater breadth of the segments and the more open 

 character of the venation constitute distinctive features. It is, 

 however, by no means improbable that the narrower and broader 

 forms may be found to be inseparable. Feistmantel's B. schencki 

 bears a fairly close resemblance to B. longifolia Heer.]: 



Other large leaves comparable with B. stormhergensis have been 

 described by Shirley from Ipswich, Queensland as Ginkgo simmondsi, 

 Baiera ginkgoides and B. ipsvicicnsis ; § Eatte || has also described 

 a very large leaf from the Wianamatta shales under the name 

 Salisburia palmata. It is possible that the large Australian leaves 

 referred by Shirley to Ginkgo simmondsi and by Eatte to Salisburia 

 palmata may be identical wdth the Triassic American type Baiera 

 vmltifidaM 



Plate VIII., fig. 3 (x). 



The lamina is incomplete, but reaches a length of 11 cm. The 



spreading and repeatedly forked veins are very clearly shown 



traversing the long lobes of the leaf, which is preserved in the 



■ form of a light brown impression, which suggests a thin lamina 



similar to that of Ginkgo biloba. 



Other Specimen : 16c. A small specimen showing terminal por- 

 tions of a leaf and slightly converging veins at the tips of the 

 segments. 



* Seward and Gowan (00), pi. x., fig. 63. 

 t Feistmantel (89), p. 72, pi. iii., figs. 1, 2, 5, 6. 



\ Heer (77), pis. vii.-x., xv. § Shirley (98). || Eatte (88) (88==). 



H Fontaine (83), pis. xlv.-xlvii. See also Seward and Gowan (00), p. 139, and 

 Arber (02), pp. 4, 5. 



