XLVll] 



FRBNELOPSIS 



345 



In another Potomac species, F. parceramosa Font.^, there 

 appears to be a single leaf at each node: this form resembles some 

 specimens from Lower Cretaceous rocks in Mexico which Nathorst^ 

 made the type of a new genus Pseudofrenelopsis, but the features 



Pig. 763. 



■Qtw 



A, B, Frenelopsis Hoheneggeri. C, D, F. ramosissima. E, F. occiden- 

 talis. (A, B, after Zeiller; C, D, after Berry; E, after Thompson.) 



are hardly sufficiently well exhibited to throw much hght on the 

 nature of the shoots. It is possible that some Wealden branches 

 from Enghsh strata described as BecMesia anomala Sew.^ may 

 belong to some species of Frenelopsis, but the absence of any leaves 

 or nodal marks precludes their inclusion in this genus. 



1 Fontaine (89) B. p. 218, Pis. cxi., cxn., CLXvra. 



2 Nathorst (93) p. 52, figs., 6— 9. ' Seward (95) A. p. 179, PI. xiv. 



