ON THE STRUCTURE OF BUDS 



149 



PL III. fig. 4, any slight touch is sufficient to detach 

 the outer scales. A few days later the pink scales also 

 begin to wither and fall off. The leaves then rise up 

 again and assume their permanent position. 



THE PLANE (Platanus) 



The case of the Plane (Platanus orientalis) is also 

 very interesting. If the base of the leaf-stalk be 



203 



267 

 WINTER-BUD OF PLANE (Platanus orientalis). 



268 



FIG. 263. st, outer or first stipular scale, entire. 



Fid. 264. st, second stipular scale, glandular and slightly hairy, entire. 



FIG. 265. st, third stipular scale, very hairy, with a minute opening at the apex. 



FIG. 266. st, fourth stipular scale, very hairy, open at the apex ; Z, the first leaf. 



FIG. 267. st, fifth stipular scale, now much shorter than the bud and open at the 



top, showing an inflorescence,/ ; I", the second leaf, which is slightly 5-lobed. 

 FIG. 268. st, sixtli stipular sheath, now reduced to a narrow rim, hairy, and here 



spread open ; I'", the third leaf, which is 5-lobed, with the two small lobes 



folded on the back of the leaf. 



examined, it will be found, as already mentioned 

 (ante, p. 6), to form a regular cap, protecting the bud 

 (fig. 7). After the leaves have fallen the winter-buds 

 are covered by several cap-like stipules, the leaves of 

 which are not developed. The outer cap is brown 

 or reddish brown, and has a gummy secretion 011 



