26 



The growth of the stem is monopodial, the flowers occurring 

 singly in the axils of leaves (Figs. 16, 17), the lateral branches 

 are few in number, being developed generally from the basal 

 parts of the year's shoots, and especially below floral year's-shoots 

 (Fig. 16 6^); they often arise from the axils of opposite leaves and 

 are therefore themselves opposite (Fig. 17 C). The limits of 

 each year's growth are not distinctly marked, scale-leaves being 

 absent from the winter buds (Fig. 16 ^, Æ") , but the year's 



Fig. 16. Cassiope tetragona. (From West Greenland.) 



A. Apical part of a branch (Upernivik; July 30. 1887). B, Transverse section of a branch 

 shewing the decussate position of the leaves. C, Capsule (about ^h). D, the flower for 

 the next year is already formed (Godhavn; June 14, 1907; 200m. above the level of the 

 sea). E, Apical part of a branch with Аолгегз formed in its upper part; about ^/i (God- 

 havn; June 14. 1907). F, G, Branches shewing several year's growths (the asterisks indicate 

 their limits). G, A shoot with lateral branches, g and g\ and fruits (/ and/i) from the 

 tлvo previous years (about -/i). 



growths have at their base only foliage-leaves, which are smaller, 

 though only slightly so, than are the other foliage-leaves; there- 

 fore the shoots are distinctly thinner at the limits of each year's 

 growths (Fig. 16 F, G). The lateral buds are protected by the 

 subtending leaves. The lateral shoots are often dwarf shoots. 

 The foliage-leaves on each year's shoot number from about 

 eight to twenty-four. They remain green two to three years. 



