FEOM THE HUTTON COLLECTION. 141 



Remarks. — It is impossible at present to refer these to any 

 figured or described plant from the Coal-measures. No. 280 is 

 part of a broad stem finely striated longitudinally, and divides 

 into three apparently distinct stems or branches. No. 281 is 

 more coarsely striated and enlarged into a knob-like swelling at 

 one extremity. These stems are of very doubtful affinity. 



Fern Stems. 



RACHIS of Pecopteris lonchitica. 

 282. — Fern stem. 



Portion of a finely -striated, compressed branching stem. 

 Loc. — Shale above the Bensham Seam, Jarrow. (//. C. 52C). 



283.— Fern stem. 



Small stem, branched, compressed, with the surface finely 



striated longitudinally. 



Loc. — Shale above the Bensham Seam, Jarrow. [H. C. 524). 



Remarks. — Perhaps these stems Nos. 282, 283 are portions of a 

 large frond or rachis of Alethopteris lonchitica. The surface is 

 finely striated longitudinally, and the striae extend into the 

 branching parts. 



Stem with Roots, 



284.— Stem . 



A part of a long, simple stem, fifteen inches, with numerous 

 rootlets spreading off from the pointed base ; no internal 

 structure to be seen in the stem, no scars on the outer surface, 

 which is covered with fine longitudinal lines, as in the leaves 

 of Cordaites, and the rootlets are similarly marked. 

 Loc. — Shale above the Bensham Seam, Jarrow. (R. C. — ). 



285.— Stem 



Counterpart or opposite portion of the rootlets and base of 

 stem of the above specimen ; the stem and rootlets all finely 

 striated longitudinally. 

 Loc— Shale above the Bensham Seam, Jarrow. (H. C. — ). 



Remarks. — No. 284 is a very long slender stem without leaf- 

 scars or any character to connect it with any known Coal-measure 

 plant. At the extreme end it is furnished with a tuft of very 

 long roots or rootlets. No. 285 is a counterpart of the basal end 

 shewing the roots. 



