ON THE PROTECTION BUDS 



81 



somewhat pointed hump, from each side of which the 

 two stipules project as spines. The bud is not visible, 

 but occupies a hollow in this eminence, which is, 

 in fact, formed by the persistent base of the petiole. 

 The cavity, as in Philadelphia, is lined by a thick felt 

 of brown, hollow, air-containing hairs. 



The protection of the bud in Berberis resembles that 

 in Rohinia. 



Fio. 128. 



Fig. 124. 



Shoot of Spartium juxceum. 



Fin. 123. Reduced one-half. PlG, 124. Part of same shoot, to show the bud protected 

 by the pedestal of the fallen leaf ; nat. size. A, bud ; P, persistent pedestal of leaf. 



In Spartium junceum (figs. 123, 124) there are no 

 stipules, but the bud is protected by the enlarged, 

 concave, persistent pedestals of the last year's leaves. 



A similar arrangement occurs in the Broom (Gy- 

 Usu8 8COpariii8) and other species of CytisuS) while the 

 terminal bud is protected by two small scales and a 

 dense covering of hair. 



G 



