VEGETABLES. ^83 



shew the upper surface, others the under; we observe the correspond- 

 ence of the petrified with the recent plant. 



Among the plants not figured, for we could only give a few 

 specimens, we have found the mta-muraria, ovivall-rue; with some 

 other small leaved ferns, one of which appears to be the ceterach, 

 while others may be assigned to the polypodium family. The best 

 impressions of these plants are in the Saltwick ironstone. 



No. 3 of Plate II is probably an asplenium: it approaches the 

 ruta-muraria in the form of its leaves. No. 4 is another delicate 

 leaved plant, but evidently of a different species. No. 1, which is 

 reversed on the Plate, is very distinctly marked, having sessile, 

 striated or nerved, oblong, recurved leaves, or leafets, placed alter- 

 nately. It appears to be a fern. No. 5 may also be a fern, though 

 it has something of the tufty appearance of some of the spiked plants 

 belonging to the didynamia class. 



Figures 2 and 6 of Plate II appear to belong to one plant ; the 

 former being a leaf, somewhat imperfect, and the latter the head or 

 fruit of the plant. The head is nearly entire, though depressed on the 

 upper surface, and resembles that of the artichoke, cynara integrifolia, 

 4;he covering, or calyx, consisting of numerous lanceolate and striated 

 leaves, partly lying over one another, though not quite in the 

 imbricated form. The con-espondence of the leaves of the calyx, and 

 some broken leaves adhering to the head, with the leaves or leafets in 

 Fig. 2, appears to mark them out as belonging to one plant. Some 

 imperfect stalks, in a decomposed state, which may have also 

 appertained to this plant, have been found in the same place. In 

 Fig. 6, may be seen the spot where the stalk has been attached to 

 to the head. The leaves of this singular plant often occur in the 

 ironstone at Saltwick; but no other specimen of the head is known 

 to have been found. The lanceolate leaves, or leafets, are often 

 larger than those in Fig. 2; and generally present a convex surface. 



