120 WEICHSELTIA. 
the frond is stiff and rigid; the axes of the pinne are, like the 
main rachis, prominent and broad. Pinnules strong and rigid, 
inclined to the surface of the slab and to the axes of the pinne. 
Venation clearly shown in some of the pinnules, e.g. those enlarged 
in the woodcut, Fig. 12. Towards the distal ends of the pinne, 
the pinnules become shorter and approach a more triangular or 
deltoid form, which is, however, more clearly seen in other 
specimens. Compare the figures of fronds by Stiehler, Trautschold, 
Hosius and yon der Marck, etc. 
A somewhat similar habit is seen in Saporta’s figure of Sclero- 
pteris Pomelit,! but the two species are probably in no sense 
related. Sussex. Beckles Coll. 
Fic. 12 (V. 2630). Pinnules of Weichselia Mantelli (Brong.). Enlarged 4 times. 
V. 2630a. Part of a frond showing a wide rachis with pinne. 
Sussex. Beckles Coll. 
V. 2173. Fig. 13. Portions of young pinne, or terminal pieces 
of older pinne showing smaller pinnules about 2:5 mm. in length, 
and of a different shape to the full-sized segments. Cf Stiehler, 
Paleontographica vol. v. pl. xiii. figs. 2ab; also a fragment 
figured by Nathorst in his “ Beitriige zur mesozoischen Flora 
Fie. 13 (V. 2178). Pinnules of Weichselia Mantelli (Brong.). Twice nat. size. 
Japans,” pl. iv. fig. 8, which he describes as possibly part of a 
fertile pinna of Pecopteris Geyleriana (= Cladophlebis Dunkert), 
but he recognizes at the same time a resemblance to Weichselia. 
1 Pal. Frang. vol. iv. p. 423, pl. 285, fig. 7, and pl. 286, fig. 2 and figs. 6-7. 
