EXPLANATION OF THE FIGURES. 



PLATE VIII. 



Figs. I 8. Showing the transition from an obvious bud-scale (i), taken from the 

 exterior of the bud, to a normal leaf (8), taken from the interior of 

 the bud, observed in an opening bud of the Horse Chestnut (Aesculus 

 indic(i), indicating that the winter bud-scales are really leaves which 

 have been checked in their development at an early stage and 

 converted into protective coverings for the bud. Minute points 

 representing the rudimentary leaflets are recognisable at the tips of 

 the scales (i) to (4). X -j- 



9. Young shoot of Stephegyne parvifolia. (), base of petiole of leaf which 



has been cut off to show the large interpetiolar stipules (?>) (/>). 

 The terminal bud is concealed and protected by the stipules, one of 

 which (0) is facing the observer. X -f . 



10. Stem of Prinsepia ut'ilis ; (a), leaf in the axil of which is situated a 

 bud (3) and also a stout spine (tf), the latter protecting the bud 

 (<5). (d) (rf), other axillary buds, the subtending leaves of which 

 have fallen off. At (<?), the axillary bud has produced a leafy 

 shoot. One of the spines bears a leaf (/) showing the spines to be 

 branches. X 4- 



