The Flora of Disko Island and Adjacent Coasl of West Greenland. 93 



granulated rather than tuberculated. - For this investigation T had, 



however, only a scanty material at my disposal. 



6'. stellaris grows in luxuriant herl)-mats and moss bogs and is comnion in Soutli- 

 ern Greenland up to 65° (Ros.). In our area it is recorded from Manitsoq, 68°45' and 

 Ikamiut, 6>S°30' by Beklin. I have not seen the specimens, and therefore I cannot 

 ascertain, whether they merely were flowering individuals of the subsequent species 

 or not. We have searched for S. stellaris in the southernmost part of our area, but 

 mostly in vain; only once, at Ivnalik in N. Stromfjord, fi7°50', did wc find spe- 

 cimens of the true .9. stellaris, not yet flowering Aug. 6. 1918. 



A distinct southern type, the abovo mentioned phiees are the 

 northern hmit in West Greenland. 



V 189. Saxifraga comosa (Retz.) Britton [Spathiilaria 



joUolosa (R. Br.) Small. 



In moist moss on bogs and heathland sometimes in manured sod 

 and in moist piaces in alpine situations. 



Very common thronghout the whole area, but less prominent and 

 preferably alpine in the southern part. Hence considered a northern 

 type. 



Widely distributed in West Greenland without northern limit, 

 decreasing southwards though found right to 62°. Not known from the 

 southern part of the east coast, where A^. stellaris, according to Kruuse, 

 occurs at least to 67°. 



In favourably exposed piaces flowering and also fruiting (see 

 remarks to the preceding species); besides producing bulblets in abund- 

 ance. In unfavourable piaces the flowers fa il to appear at all. 



Hibernates covered by snow. 



I 190. Saxifraga rivularis L. 



In wet piaces, moist moss, at the horders of brooks and lakes and 

 often in manured soil; from the brackish lagoons at the shore ascending 

 to the melting edges of the snow-fields. 



Very common throughout the whole area. 



Widely distributed in Greenland without southern or northern 

 limit. 



Hibernates covered by snow and very often by ice. 



Varies very much according to the quality of the habitat. Most 

 of the forms are coloured red by anthocyane; but among the various 

 forms there is one with green leaves and white flowers al most without 

 anthocyane- formation. The occurrence of this form does not seem to 

 be dependent upon the habitat, judging by the wanting transition-forms 

 when growing among the red forms; and apparently it seems to be her- 

 editary constant. (Comp. Porsild: Medd. om Grld. 50, p. 377). 



