332 DESCRIPTION OF THE PLATES. 



PLATE XIV. 



Union of Leaves. 

 Fig. 



1. Two leaves of Laurus nobilis united toeether. 



2. A similar example from Juslicia oxypkylla. 



PLATE XV. 



Btids. 



Fig. 

 I, 2, and 3. Radical buds of Pceonia nfficinalis, in different states of development. 



4, 5, and 6. Buds of Amelanchier in different degrees of development. We see the 



stipules and bracteoles resembling each other. 

 7 and 8. Buds of Pyrus hi/brida at different ages. 



5. Progress of the scale into leaves, showing that these buds are of a fulcraceous 



nature. 



PLATE XVI. 



Varieties. 



Fig. 



1. Top of the winged branch of Xylophylla, enlarged; showing the origin of the 



flowers from each little notch. 



2. Portion of a branch of Capparis quadriflora, with spiny stipules on each side of 



the leaf, and the pedicellate flowers springing in a vertical series above the 

 axil. 



3. Ruscus aculeatus. The alternate sheaths may either be considered as true coty- 



ledons, or as primordial leaves if the cotyledons be concealed in the seed. 

 The leaves resemble scales at the bases of the leaf, like compressed branches. 



4. The axis of the cone of Larix Eurnp&a prolonged into a branch. 



PLATE XVII. 



Proliferous Rose. 



Fig. 



1. A rose with a flower bud in nearly the ordinary state, and with a proliferous 



flower: in which the calyx is changed into leaves, and does not adhere to the 

 ovary ; the petals and stamens are nearly in the state of a semi-double rose ; 

 the axis is prolonged in the centre of the flower bearing a second. 



2. The above flower seen from below. 



3. The same, cut through the centre, the sepals and petals being removed. 



4. An ordinary petal. 



5. An ordinary stamen. 



6 and 7. Stamens changing into petals. 



8. A petal of the supernumerary flower. 



9. A stamen of ditto ditto. 

 10. A carpel of ditto ditto. 



PLATE XVIII. 



Varieties. 



Fig. 



] and 2. Two flowers of Podospermum laciniatum ; one in the ordinary state with 

 the limb changed into the pappus : and the other with a five-lobed calyx. 



3 and 4. Two flowers of Capsella Bursa-pastoris with ten stamens : the four petals 

 being changed into stamens in addition to the six ordinary ones. 



