XLVIl] 



FRENELOPSIS 



345 



In another Potomac species, F. parceramosa Font. 1 , there 

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

 specimens from Lower Cretaceous rocks in Mexico which Nathorst 2 

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



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

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



are hardly sufficiently well exhibited to throw much light on the 

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

 from English strata described as Becklesia anomala Sew. 3 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., CLXVIII. 



2 Nathorst (93) p. 52, figs. 69. 3 Seward (95) A. p. 179, PL xiv. 



