19 
instrumental in marking the limits of each year’s growth fairly 
distinctly, ought strictly speaking to be called scale-leaves (see 
Fig. 10G, H). The year’s growths are rather short, only from 
one to two cm. long. 
According to Hacıunv assimilation may take place in the 
foliage-leaves for several years, but no definite proof of this 
has been given. In Greenland I found three-years-old leaves 
which were still green. 
The flowers, numbering from one to six, are situated at 
the apex of the branches (Fig. 10 A, 6); they spring from the 
axils of the foliage-leaves which occur immediately 
below the rudimentary uppermost parts of the BØR 
branches. After flowering the whole of the floral É 
portion of the shoot dies. The leaves, which subtend 
the flowers (Fig. 10 D) are relatively broader than the 
other foliage-leaves (Fig. 10 C; Fig. 11) anda smaller 
The flowers have two thin bracteoles at the 
base of their stalk (Fig. 12 A). 
After the floral portions of the shoots have 
portion of their margin is rolled back. | 
Fig. 11. 
; ä ; : : i à Phyllodoce 
arise in the axils of the leaves immediately below leu 
died, two to several new foliage-bearing shoots 
them. (Bryanthus 
There is a certain periodicity in the plants oe 
flowering, and this is the case with the plants in a en 
the whole of the district in question. Thus the 
species flowers sparingly or scarcely at all during certain years, 
and then there follows a year rich in flowers (Hactunp). 
The flowers are formed during the year previous to that 
in which they open. 
The following I find to be the ‘‘flower-biology;” the 
account differs considerably from that of Axerr (1869). 
In Greenland the flowers are among the earliest spring 
flowers, they are very conspicuous, being raised into the 
DES 
