177 



of the shoot die ; but vegetative propagation takes place by 

 means of the lateral shoots; the lower part of the stem of the 

 parent shoot, which bears them, ap- 

 pears to be able to keep alive for a 

 long time. 

 The lateral shoots 

 do not arise in any 

 fixed order in the 

 leaf-axils, and are 

 observed most di- 

 stinctly in the axils 

 of the lower, al- 

 ready dead, leaves 

 of the rosette. 



They often occur gathered closely together 

 around the parent shoot, but may also be 

 removed to a distance from the latter by a 

 slender stem which runs along the ground 

 and may be as much as 2 — 4 cm. long. 

 In Greenland this plant appears to belong to the very late- 

 flowering species (July). 



Fig. 3. Saxifraga Aizoon. 



A small plant from West Green- 

 land (July 17, ISSi); almost na- 

 tural size. An inflorescence is de- 

 veloped upon the primary shoot. 

 (E. W.) 



Fig. 4. 

 Saxifraga Aisoon. 



Portions of a foliage-leaf 

 (mas.). (E.W.) 



Fig. 5. Saxifraga Aizoon. 



Parts of flowers from West Greenland. A, A yoimg flower, 9 mm. in diameter. The antipe- 

 talous petals are not yet functional. Б, The same flower. C, Pistil of same. D, An older 

 flower; the styles are spreading; the stigmas are ripe and have germinating pollen {E, F) 



upon them. (E W.) 



The flower appears to agree with those from the Alps. 

 In its first stage it is 6 — 7mm. in diameter; subsequently it 

 increases to as much as about one cm. The petals are white with 



ХХХЛ1. 12 



