XLV] VOLTZIA 293 



clearly between certain forms of Walchia and Voltzia. A very 

 similar type is figured by Schiitze^ as Widdringtonites keuperianus 

 Heer^ from Stuttgart but with no justification for the use of a 

 generic name implying relationship with Widdringtonia. The 

 fragments of foliage-shoots on which Heer founded this species 

 are too small and of too common a type to be referred to a genus 

 implying any definite position in the Coniferales. 



Voltzia Liebeana Geinitz. 



A Permian species*, characteristic of the Zechstein copper- 

 bearing beds of Gera and other localities, represented by foliage- 

 shoots (fig. 748, C), well preserved cone-scales, and strobili. The 

 vegetative branches closely resemble those of V. heterophylla and 

 TJllmannia selaginoides : there is the same inconstancy in leaf -form 

 as in the Bunter species. The strobili are also similar to those of 

 F. heterophylla : the largest example figured by Geinitz is 2-5 cm. 

 in diameter and 7 cm. long. The cone-scales (fig. 748, D — F) 

 have five lobes, deeper than in. V. heterophylla, and the central lobe 

 is longer than the others. The occurrence of three seeds is a 

 characteristic feature; these are ovate, 5 x 3 mm., and have a 

 narrow marginal wing. From their close association with strobili 

 Geinitz identified some spherical seeds, formerly described by him 

 as Cyclocarpon eiselianum, as those of F. Liebeana. This author 

 figures an imperfectly preserved strobilus as a male catkin; it 

 resembles those of F. heterophylla, but no microspores have been 

 discovered. Heer describes some foliage-shoots and detached 

 lobed cone-scales from the Permian of Hungary as F. hungarica* : 

 the scales are similar to those of F. Liebeana but have slightly 

 narrower lobes. 



Voltzia heuperiana (Schimper). 



This specific name^ was given to fertile shoots characterised 

 by long and lax strobili called by many authors F. coburgensis 

 Schauroth^, a designation first applied to a cast resembling Lygi- 

 nodendron (cf. fig. 401, Vol. iii. p. 37) from the Keuper of Coburg 

 and having no proved connexion with Voltzia. The strobili and 



1 Sohutze (01) PI. X. 2 Heer (65) A. fig. 31 ; (76) A. PI. xxx. figs. 4, 5. 



3 Geinitz (80) p. 26, PI. v. » Heer (76=). 



= Schimper (72) A. p. 243, PI. lxxvi. « Schauroth (52) p. 540. 



