348 



Morten P. Porsild. 



A, 

 A. 



D. 



E. 



Fig. 1. 

 B, C. Structure of shoot in T. palustris (Finse, Norway). 

 Habit drawing of two flowering shoots which only cohere by the 

 aid of the roots. b, the scape with its sheath-formed bract. 

 The main-shoot, /, has two withered leaves (1 — 2) and six fresh 

 {3 — 8). In the axil of 2 a shoot: II, is to be seen, and in the axil of 

 3 another one //, of which 4 leaves are visible. Magnified, detailed 

 drawing of it in the following (C). 



Shoot with its subtending leaf: f, and with 3 leaves marked 1, 2, 

 3, 4. 1 and 2 turn their back to the mother-axis. 

 T. coccinea. Foliage shoot with withered remains of leaves, from 

 unfavourable habitat. (Dove Bay, E. Greenland; leg. A. Lundager, 

 27. 6. 1908). 

 Germination in T. calyculata. (Drawn by E. W.) 



