Jan. uie.l 



ON THE LOCALISATION Of ANTHOCYANIN. 



15 



Total (6) 



Confined 2 



(30) (34) 

 7 3 



(45,42) 



10 

 - 33 - 



(16) (28) (10) 



+ Anthocyanin well develops. 

 ( + ) Soon it disappears. 

 Hairs present, but no anthocyanin. 



+2 Two layers. 

 ] Closely related. 



I see that anthocyanin is, in a majority of 69 species, localised in 

 the palisade (hypodermal layers when young) and spongy parenchyma 

 in the spring leaves and that it is, in a few of them, confined to epi- 

 dermis (Rosa, Zanthoxylon, Cedrela, Euonymus etc.) or to hairs 

 (Mallotus, Sterculia). So the distribution of transitory anthocyanin 

 in the young leaves is to be classified as : — 



Hairs Epidermis Mesophyll Epidermis and Mesophyll 



It is also noticeable that the lower epidermis and the lower hypo- 

 dermal layer are richer in the pigment than the upper ones in the 

 young leaves. 



