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EXPLANATION OF THE PLATES. 23& PLATE THE THIRD. Bulbs. Fig. 1. Allium sativum. AsphodelecB. - Rdbt fibrous, bulb-bearing; bulb ovoid, rounded, compound, coated.a. Cloves. Fig. 2. Lilium candidum. Liliacece. Root fibrous. bulb-bearing; bulb ovoid, scaly. Fig. 3. Cepa esculenta. AsphodeLece. Root fibrojisy bulb-bearing ; bulb roundish, coated.—Cut transversely to show the fleshy coats of which it was composed. Fig. 4!. Gladiolus. Iridece. Root fibrous, bulb-bearing bulb roundish, tuberous, coated ; coats fibrous.— Cut transversely to show the structure of the turion. Fig. 5. Syringa vulgaris. Jasmi/iecE. Branch bearing buttons; buttons mixed, opposite, covered with a scaly perule.—Cut transversely to show the thyrse of flowers formed in the autumnal buttons. Fig. 6. Daphne florida. ThymeleoB. Branch with flowerbearing buds on the sides, and a leaf-bearing bud at the end ; pejules scaly. Cut transversely to show the internal structure of the leaf-bud. Fig. 7. Hippophae littoralis. Elfsagnece. Part of a young stem, cut vertically. a. Bark. I. The second layer of wood in the stem which becomeA the first in the branches. c. Stem. d. Branches. e. The first layer of wood in the stem, which being formed before the branches does not enter into them. Figs. 8 to 21. Represent various diposition of the leaves and floral covers in their buds. Fig. Fig. 15. Folded. Fig. 16. Enveloping. Fig. If. Riding, alternately. Fig. 18. Involute, oppositely. Fig 19. Involute, alternately. Fig. 20. Revolute, oppositely. Fig. 21. Riding, oppositely.

J'la^cJU. BTLTJJB§

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