Vol. 69.] OUR KNOWLEDGE OF WEALDEN FLORAS. 91 



Schizseaceae. 



Beffordia G03PPERTI (Dunk.). (Text-fig. 2 A, below.) 

 (Fairlight, Dawson Coll.) 



1846. Splienopteris goepperti Dunker, ' Monographie der Norddeutschen 



Wealdenbildung ' p. 4 & pi. i, fig. 6 ; pi. ix, tigs. 1-3. 

 1894. Ruffordia goepperti Seward, ' Wealden Flora ' pt. 1, p. 76. 



The Dawson Collection includes a piece of fertile frond of the 

 same type as one previously figured from the Hastings district, 1 

 and from this a few spores were obtained by treatment with 

 Schulze's solution. The spores are -05 mm. in diameter, and have 

 a rounded triangular form, the surface being characterized by the 

 presence of numerous ridges (text-fig. 2 A) : they agree in shape 



Fig. 2.— Spores of (A) Ruffordia goepperti ; (B) Pelletieria 

 valdensis; and (C) Matonidium goepperti {all considerably enlarged). 



and sculpturing with those of certain recent Schizaeaceous ferns, 

 and are similar to the spores of Mr. Berry's Potomac fern Schizce- 

 opsis americana 2 In his earlier paper in the ' Annals of Botany ' 

 the fern which he afterwards named Scliizceopsis americana was 

 regarded as specifically identical with Baieropsis expansa Pont., 

 and referred to as Scliizceopsis expansa. The spores of the recent 

 species Aneimia tomentosa Sw. and Mohria caffrorum Desv., which 

 are of the same type as those of Ruffordia, measure respectively 

 0T mm. and 08 mm. in breadth. 



No sporangia have been found ; but the structure of these spores 

 supports the inference, based on the habit of the fertile and sterile 

 fronds, as to a Schizaeaceous alliance. 



Pelletieria valdensis, gen. et sp. nov. (PI. XII, figs. 12 a & 12 b ; 

 PI. XIV, fig. 5. Also text-figs. 2 B, 3, & 4.) 



(Fairlight Clay, Dawson rioll. ; near Hastings, Bufford 

 Coll.) 

 The specimens on which this new genus is founded do not afford 

 sufficient data on which to base a complete diagnosis, nor do they 



i Seward (94) pi. v, fig. 5. 



2 Berry (11) pi. xii ; id. (II 2 ) pi. xxii, figs. 4-9. 



