348 



THE JOUENAL OF BOTANY 



The specimens obtained from the garden gave slightly larger 

 dimensions than the others, twenty from each locality being 

 selected for examination and measurement. The garden ones 

 gave the following measurements : — 



Average length of flowering shoot . . 12 cm. 



Number of shoots to each plant . . . 2-6. 



Distance of rosette from base . . . 2-7 cm. 



Average length of main root ... 5 cm. 



level of soil. 



Fig. 1. — Heath type. 



level of grass, 

 Ulex, &c. 



level of 

 Sphagnum, 

 grass roots, 



&Q. 



Bog type. 



The basal, unbranched portion of the stem is rarely erect, 

 usually procumbent. The crowded leaves which occur about the 

 portion where branching takes place are oval, *5 cm. in average 

 length. 



The upper lanceolate leaves, -5-1 cm. in length, occur alter- 

 nately with an average distance of 1 cm. between them. 



The root system consists of a main root, branched near its 

 apex, and closely invested by a mat of grass rootlets, moss 

 rhizoids, &c. 



