PLATE X. 



FIG. 



1. A leaf of Chicory, l n. s. 



2. A horizontal section from midrib of leaf, with thin woody 



bundles. 



3. A portion of the skin removed from under side of leaf, greatly 



magnified to show the hairs on this part. 



4. Leaf of Comfrey, ^ n. s. 



5. Horizontal section of midrib of leaf, showing the position and 



character of woody bundles, 



6. A minute portion from the skin of the leaf on its under side, with 



a, large curved hairs with striated surfaces ; l> b, hairs formed 

 like fish-hooks : very highly magnified. 



7. Leaf of Jerusalem Artichoke, ^ n. s., attached to stem. 



8. Horizontal section of midrib of leaf, with woody bundles. 



9. Epidermis from under side of leaf, greatly magnified, to show the 



peculiar form and texture of the hairs. 



R. CLAY, SONS, AND TAYl.O?., PRINTERS, LONDON. 



