370 MR ROBERT KIDSTON ON THE FOSSIL FLORA OF THE 



in error.* 



In my Catalogue of Palwozoic Plants I united Pec. elegans with Pec. unita 



error.* 



Localities : — 



Pec. unita, Brongt. 



Eadstock ; Braysdown Colliery ; Upper Conygre Pit ; Lower Conygre Pit ; 

 Kilmersdon Pit ; Wellsway Pit ; Camerton. 



Pec. unita, Brongt., forma emarginata, Gopp., sp. 



Wellsway Pit ; Braysdown Colliery ; Camerton ; Radstock ; Upper Conygre 

 Pit. 



Pecopteris villosa, Brongniart. 



Pecopteris villosa, Brongt., Hist. d. veget. foss., p. 316, pi. civ. fig. 3. 



Remarks. — This species is included here merely as having been founded by 

 Brongniaet on a specimen from near Bath. 



It is now well known that the outer surface of the pinnules of various 

 species of Pecopteris possesses a villosity, and as this villosity often quite obscures 

 the veins, it is occasionally extremely difficult, if not even impossible, to 

 determine to which species such specimens should be referred. Zeiller 

 suggests that Pec. villosa may perhaps belong to Pec. abbremata, Brongt. 

 ( — Pec. Miltoni, Artis), but as the nervation on the type specimen is obliterated, 

 it is quite impossible, in the absence of this most important character for 

 the specific determination of the members of the genus Pecopteris, to decide 

 to which species it should be referred. 



Having observed a villosity on an undoubted specimen of Pec. oreopteridia, 

 Schl., sp.,t and from the general outline of Pec. villosa, Brongt. agreeing so 

 closely with that of Pec. oreopteridia, I am inclined to refer Pec. villosa to 

 that species. The point, however, cannot be definitely settled from the meagre 

 evidence before us.j 



Only one thing seems clear, that Pec. villosa, Brongt., most probably 

 represents a condition of a species known under another name when the veins 

 are not obscured by the villosity, and is not itself a plant possessing a true 

 individuality. 



The Cijatheites villosus, Geinitz,§ is referable to Pec. abbremata, Brongt. 

 ( = Pec. Miltoni, Artis). 



Locality : — Near Bath {Brongniart). 



* Sec Zkillkh, Vri/f'f. foss. (I. terr. houil., p. 93, pi. clxvi. figs. 5, 6. 



t See PL XXVII. figs. 3, 4. 



X See Zeiller, "Notes sur la flore houillere des Asturies," Mem. Soc. Gcol. du Nord, 1882, p. 12. 



§ Vers. d. Steinkf. in Sachsen, pi. xxix. figs. 6-8. 



