EXPLANATION OF THE PLATES. 



the radical plate; d. young lateral leaf bulbs; e. (fig. 6.), 

 a bulb which has produced leaves this season, formed with- 

 in the coats of the parent bulb. (p. 183). 



Fig. 8. A longitudinal section of fig. 6. : a. the caudex; b. the young 

 bulb ; c. c. the remains of this year's plant, (p. 184). 



9. A transverse section of fig. 6. (bottom of the plate): a. the 



young bulb ; b. the old or parent bulb ; c. c. roots, (p. 184). 



10. A bulb of Allium sativum, denuded of its outer or sheathing 



tunics: a. the young bulbs; b. c. d. e. remains of the 

 sheathing layers;/, the caudex and roots, (p. 187). 



11. A longitudinal section of fig. 10.: a. the caudex; b.c. d. 



the sheathing layers which terminate in leaves, (p. 186). 



12. A. The bulb of Fritillaria Pyreniaca : a. a. the two hemi- 



spheres, which are conjoined at the caudex ; b. the flower 

 stalk rising between them ; c. the roots : B. a. a. one of the 

 hemispheres separated from the other; b.b. the young 

 bulbs; c, the flower stalk ; d. the roots, (p. 172). 



PLATE IV. 



t. A twig of Cullumia ciliaris. (p. 267). 



2. A twig of Acacia decipiens. (p. 267). 



3. A twig of Acacia alata. (p. 267), 



4. A portion of the stem of Ruta graveolens. (p. 265). 



6. The flower bud of CEnothera grandiflora, which is macu- 

 lated, (p. 266). 



6. A perfoliate stem, as demonstrated in Chlora perfoliata, (p. 



267). 



7. The stem of Lathy rus latifolius; illustrative of the winged 



and the stipulated stem ; a. a. a. a* stipules (p, 267). 



8. A portion of the stem of Passiflora quadrangularis : a. a. 



tendrils (p. 653); b.b> stipules; c.c.c. glands. 



9. A portion of the stem of Lilium superbum: a. a. bulbs, (p. 



268). 



10, A portion of the stem of Cactus flagellifonnis. (p. 268). 



