340 EXPLANATION OF THE PLATES. 



Fig. 14. — a. The leaf, and b. the ciliated irritable trap-like append- 

 age of the Dioncsa fnuscipula, or Fly-trap. c. One of the 

 few glandular hairs or bristly processes (enlarged), situated on 

 either side the centre of the lobes of the trap, and in which the 

 irritability of this appendage chiefly resides, as it instantly folds 

 together or closes on their being touched. 



Fig. 15. — a. a. An example of the floral leaf or bracte, which is 

 3-lobed, in the Euchroma coccinea or Bartsia. 



Fig. 16. — a. The ovate bud of the Tulip tree (Lyriodendron). 

 b. The membranous concave bractes. c. The truncated 

 quadrangular leaf. 



Fig. 17. — A flower of the umbel of Hoy a carnosa. a. The co- 

 rolla, b. The 5 petaloid nectaries or lepanthium. 



PLATE IX. 



ROOTS, STEMS, AND FORMS OF INFLORESCENCE. 



Fig. 1. — The fibril of a root highly magnified : a. the vessels 

 in the centre seen through the cortex ; b. the natural size of 

 the fibrils. 



Fig. 2. — A transverse section of 1. a. the central vessels ; 

 b. c. the cellular cortex, d. The section of its natural size. 



Fig. 3. — A creeping square stem. (Mint.) 



Fig. 4. — Spindle-shaped or Tap-root (Radix fusiformis) of the 

 radish accompanied by its cotyledones and young leaves. 



Fig. 5. — A tunicated or coated bulb (the Onion). 



Fig. 6. — A scaly or squamose bulb (the Lily). 



Fig. 7. — The palmated or hand-shaped roots of Orchis. 



Fig. S. — The radicant or clinging stem of the Ivy. 



Fig. 9. — The spike of Ophrys spiralis ; — the flowers seated on 

 an elongated rachis or stalk. 



Fig. 10. — The raceme of the Red Currant ; — the flowers being 

 pedicellate. 



Fig. 11. — The twining or volubulous stem of the Convolvulus. 



Fig. 12. — A branch in the form of a leaf in Buscus hypoglossum. 

 The flower arising from the leaf. 



Fig. 13. — The cyme in a species of Cornus. The general pe- 

 duncles from a common centre as in the umbel, but the par- 

 tial ones from various parts of the piimaiy peduncles. 



Fig. 14. — The corymbus of the Kalmia; — with flowers from vari- 

 ous parts of the branch, but all meeting in a flat topped cluster. 



Fig. 15. — The panicle of Poa pratennis, or Meadow-grass; — an 

 irregular and branching mode of inflorescence. 



