MATONIDIUM. 



67 



V. 2222. "Woodcut, Fig. 8. Portions of several pinnfe con- 

 verging to a large rachis. Par inferior in preservation to Schenk's 

 figured specimens. Ecclesbourne. Rufford Coll. 



V. 2223. On this specimen is a fragment of a fertile pinna 

 showing the position of the sori. Ecclesbourne. Rufford Coll. 



i:m- 



Fig. 8.—Matomihum Gopperti (Ett.) (V. 2222). 



V. 2737. The pinnules arc larger than in the other specimens, 

 more like those of Microdiotyon in size, but their shape is that of 

 Matonidium. 



Similar examples of size variation have been referred to in the 

 figures of Schenk, Heer, and Trautschold. Ecclesbourne. 



Rufford Coll. 



V. 2175, V. 2175», V. 2178, V. 2205, V. 2384. Pinnules 

 narrower than usual. Ecclesbourne. Rufford Coll. 



10,827, 11,618. Tilgate Forest. 



Mantdl Coll. 



