62 CATALOGUE OP FOSSIL PI ANTS 



Var. stricta. 



96. var. stricta, Sternb. 



Single frond. The leaves are much more rounded in this form 



and more rigid than in the typical species. 



Loc. — Shale above the Bensham Seam, Jarrow. (H. C. 182). 



97. Three or four flattened, broad-stemmed fronds, looking 



like a mis-shapen growth of S. Artemisicefolia. 



Loc. — Shale above the Bensham Seam, Jarrow. (H.C. 183). 



Yar. Crithmifolia. 



98. — Sphenopteris Crithmifolia, L. et H. 



This specimen shews four or five inches of the rhizome, with 

 a terminal tuft of basal part of fronds. Though somewhat 

 indistinct it shews the attachment of the fronds to the rhizome. 

 Loc. — Shale above the Bensham Seam, Jarrow. {H.C. 196). 



99. Portion of rhizome, shewing the attachment of the lower 



portion of a number of fronds to the stem. 



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



100. Frond, about nine inches long; not perfect at base; 



about three inches broad, well spread out, and shewing the 

 shape, branching, and arrangement of the leaves and nerves 

 of this variety well. It is very like in general form to pi. 46, 

 Foss. Flora. 

 Loc. — Shale above the Bensham Seam, Jarrow. (H. C. 194). 



101. A narrow, compressed stem, with branches bifurcating 



repeatedly into many smaller branchlets. What seems to be 



portions of the same specimen on two slabs. 



Loc. — Shale above the High-Main Seam, Gosf orth. (H. C. 307). 



Remarks. — The drawing of this fine, characteristic local fern, 

 first figured by Sternberg, was sent to him by Dr. Buckland; 

 and the specimen of his S. stricta was said to be from Jarrow. 

 Brongniart received the drawing of his large figure, Plate 66, 

 from Dr. Taylor, of Sunderland, of whom further mention will 

 be presently made. The drawing of Plate 67, f. 1, was from 

 Rev. Dr. Buckland, and this author states that he had seen only 

 one specimen of this remarkable species (Plate 67, f. 2). Observe 

 on two of Brongniart' s figures the spore-cases, or sporangia, Car- 

 diocarpon acutum, L. et H., of this fern, as they differ slightly in 



