250 — 



tected more or less by the papillae (tig. 32 o?), are lying nearly in the 

 plane of the epidermis and have two guard-cells. 



Crystals are found in the mesophyll. Scattered, stiff, dagger- 

 like hairs occur, and further a very few gland-hairs. 



A short description of the anatomy was earlier given by F. 

 Kopffi). 



Dodoncea viscosa L. 



The leaf is dorsiventral. The epidermis of the upperside has 

 rather large polygonal cells, with a rather thick cuticula, and no 

 stomata (fig. 33 a, b). 



The palisade tissue consists of two layers of cells, of which 

 the uppermost has narrow cylindric cells, the undermost, on 



the contrary, more irregu- 

 larly shaped cells. The 

 spongy-parenchyma has in 

 transverse section irregu- 

 larly shaped cells, the under- 

 most layer being somewhat 

 lengthened. 



The cells of the epi- 

 dermis of the underside are 

 also polygonal, but much 

 smaller than those of the up- 

 perside. The stomata reach 

 a little over the surface. 



On both sides of the 

 Fig. 33. Dodoncea viscosa L. Anatomy of , , ^ , . , 



leaf. «, transverse section, h, epidermis of l^^^^S large, flat, somewhat 

 the upperside. c, epidermis of the underside. depressed gland-hairs occur. 



III. The rocky coast vegetation. 



(Cfr. Borgesen, 1898, p. 27 ; 1900, p. 24.) 

 Nearest the sea a lichen-belt will certainly be found every- 

 where on the rocky shores; and close above highest water mark 

 in localities inaccessible to the sun are also to be found a few 

 species of algae e. g. Bostrychia-specles, Lithothamnion, Enteromorpha, 

 Chcetomorpha antennina, Ralfsia besides bluish-green algae and 

 others, a vegetation very similar to what I have already described 



') Kopff, Fr. , Ueher die anatomischen Gharactere der Dalbergieen, Sophoreen 

 und Swartzieen. Diss. Munchen 1892. 



