432 



THE CAKBONIFEROUS SYSTEM. 



Fig. 161. — Sigillaria:. 



WM 



41_ a ;l 



A. Si gillaria Broumii, restored. Fur other illustrations of this species, see Fig. 30. 



I!. <S'. tlegans, restored. 



B 1 , Leaf of S. elegans. 



B 2 , Portion of decorticated stem, showing one of the transverse bands of fruit-scars. 



B* Portion of stem and branch reduced, and scars nat. size. 



C, Cross section of Sigillaria Brownii (?), reduced, and portion at (M) natural size, (a) Steni- 

 bergia pith, (b 1 ) Inner cylinder of scalariform vessels. (fi 2 ) Outer cylinder of discigerous 

 cells, with medullary ravs and bundles of scalariform vessels going to the leaves 

 at (b*). (c) Inner bark. \d) Outer bark. 



I>, Scalariform vessel magnified. H, 5. eminens, reduced. (Hi) areole, half n. size. 



E, Discigerous woody fibre, magnified. I, S. catenoides, half nat. size. 



F, Sigillaria Bre.tonensis, %. (/'_) Areole, n. size. K, S. planicosta, half nat. size. 



G, S. striata, nat. size. h, Portion of leaf of S. scutellata. 



