292 CONIPEEALES INCERTAE SEDIS [CH. 



the same explanation applies to VoUzia heterophylla. Triassic 

 Voltzia casts were referred by Schleiden to a distinct genus Endo- 

 lepis : examples figured by Schenk^ afiord a good illustration of 

 their close resemblance to Schizodendron. The medullary casts 

 of the Triassic genus differ from those of Schizodendron in their 

 smaller diameter and in the absence of periodic swellings : narrow- 

 slits in the elongated areas mark the position of out-going leaf- traces 

 (fig. 748, B). A similar though larger form of cast is figured by 

 Miss Holden^ from Coburg and New Brunswick and referred to 

 VoUzia coburgensis. Fliche* has described . a form from the 

 Muschelkalk of France with more slender shoots than in most 

 examples of V. heterophylla. Specimens from Swiss Triassic beds 

 figured by Heer* and Leuthardt^ as examples of this species are 

 too incomplete to be identified with certainty. Feistmantel's 

 Indian specimens^ referred to F. heterophylla, which I have re- 

 cently examined; from Lower Gondwana strata, show a variation in 

 leaf -form suggestive of the European species, but the determination 

 is open to question. A supposed cone-scale figured by Feist- 

 mantel resembles in outline the lobed scales of V. Liebeana. Some 

 very incomplete branches regarded by Feistmantel as pieces of 

 Albertia shoots, are probably identical with the impressions assigned 

 to Voltzia. On a few of the smaller Indian specimens I found 

 leaves 5 mm. long divided into two slightly divergent prongs, 

 a feature unknown in Voltzia but suggesting Gomphostrobus or 

 small leaves of Dicranophyllum. Some small seeds figured by 

 Zeiller' from the Karharbari beds of India as probably belonging 

 to Voltzia cannot be determined with confidence. 



Voltzia ivalchiaeformis Fliche. 



Fliche^ gives this name to vegetative shoots from the Bunter 

 of the Vosges characterised by a Walchia-like habit of branching, 

 the pinnately disposed lateral branches being given off at about 

 40° ; the leaves are elliptical, short and broad, more or less appressed 

 and less spreading than in Walchia. It is, however, impossible 

 without the confirmatory evidence of strobili to distinguish 



1 Schenk (68) p. 80, PI. vi. = Holden, R. (13). 



3 Fliche (10) Pis. xviii., xix. « Heer (76) A. PI. xxx. 



» Leuthardt (03) PI. iv. figs. 2—5. ' Feistmantel (79=) Pis. xxii.— xxv. 



' Zeiller (02) B. PI. vii. fig. 9. s Fliche (10) p. 198, PI. xxi. 



