' 9 



io6 



1 



Agave univittata. 



Fig. loo. A germinating plantlet, of which the cotyledon is bent, and the 



seed attached, nat. size. 



loi. The same, a Httle older, nat. size. 



I02. The same, with the seed dropped, and the cotyledon free and 



straight. A longitudinal slit is to be seen at the base of the coty- 

 ledon for the penetration of the plumule, nat. size. 



Eticharis Candida, 



Fig. 103. The first stage of the germinating plantlet, where the plumule is 



not yet visible, nat. size. 

 104. A young plant with the cotyledon free ; the first leaf has developed *t 



and a secondary root has come out, nat. size. 



PLATE XV. 



Smilax rottmdifolia. 



w 



Fig. 105. A germinating plantlet, with the fruit attached, nat. size. 



106. Part of the same, showing the cotyledon, the epicotyl, the hypo- 



■ cotyl and the first leaf, 5 X^^^- ^i^^- 



107. The same, with the sheath of the cotyledon laid open to show the 



bud in the axil of the cotyledon, 5 X ''*^^- size. 



108. The lowerpart of an older specimen, where the fruit has dropped, 



and the first secondary root has developed, 3 X ^^^^- size. 



109. The same, with the sheath of the cotyledon removed to show the 



bud in the axil of the cotyledon, 3 X "3*- size. 

 no. A young plant, where a secondary branch has developed from 



the axil of the cotyledon, nat. size. 



111. The base of a young plant, where a tuber has developed from the 



axil of the cotyledon, 2 X ^^^- size. 



112. The rhizome of a full grown plant, nat. size. 



1 13-120. Leaves of different forms from young plants, nat. size. 



121. A leaf of a full-grown plant, showing the typical form, nat. size. 



122. A leaf of a full-grown plant, the form of which is very common, 



but not typical, nat. size. 



St? It I ax glaiica. 



Fig. 123. A germinating plantlet, nat. size. 



PLATE XVL 



Smilax glaiica (continued). 



Fig, 124. The rhizome of a younger plant, showing one tuber, 2 X "^* 



size. 



125. The same, 2 X i^^^* size. 



126. The rhizome of an older plant with three tubers, 2 x nat. size 



127. Tuberiferous stolons of a full grown plant, nat. size. 



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I 



