The Flora of Disko Island and Adjacent Coast of West Greenland. 103 



A 202. Potentilla alpestris Hall. fil. (Syn. P. maciilataPovRB..; 



P. Langeana Rydb.). 



hl herb-math) and copses. 



Disko: Rather common on the south coast. In Diskofjord on the nortli coast 

 and at the hot springs of the south coast. On the north coast of Mellemfjord to 69°45'; 

 from Mudderbugt to Kvandal behind Ujaragsugssuk 6it°45' (P.). 



Hare O. The south coast, scarce 70°22' (P.). 



Mainland: Ritenbenk 69°45' (V.); Jakobshavn (Sor.); Egedesminde (Sør.). 

 On the mainland s. o. Ikamiut island 68°23' common (P. & E.). 



A soiitheru type, the above mentioned localities represent the 

 northern limit of the species in West Greenland. 



All the mentioned localities in the lowland. 



Abundantly flowering and frniting. 



Hibernates covered by snow. 



Rather variable, some of the forms certainly depending on the 

 quality of the habitat. Var. hirta Lange is in well-marked forms a rather 

 deviating type, by Rydberg 1. c. p. 179 considered an independent 

 species: P. Langeana Rydb.; it is distinguished by several flowered 

 cymes and the long pubescence of the leaves, but also by the more acute 

 teeth, the longer and more acutish bractlets and narrower sepals. This 

 form seems to be more common than the mainspecies; it is sometimes 

 very tall and robust. 



As most of the numerous European forms of the comprehensive col- 

 lective species P. alpestris are constant in culture, the same may per- 

 haps be the case with this. 



P. r ubens Vill. is recorded from Godhavn by Rowlee &Wiegand; 

 but as this Mediterranean species has been found nowhere else in Green- 

 land I am inclined to refer the plant to the form-circle of P. alpestris. 



, 203. Potensilla Frieseana Lange. 



This remarkable plant has only once been recorded from Kuåner- 

 ssuit in Diskofjord 69°35' (Th. Fr.) 



In vain I haA^e searched for it here during many years. Of the re- 

 cent monographers of the genus Rydberg accepts it as a valid species 

 rather deviating from the other ones; but Th. Wolf reduced it to a 

 form of P. alpestris. The most remarkable characters is the dense glan- 

 dular pubescence. But as P. emarginata also normally shows a glandular 

 covering (see Abromeit 1. c, Knud Jessen, Medd. om Grl. 37, p. 39). 

 1 feel rather inclined to consider P. Frieseana a luxuriant form of this 

 species or a hybrid between P. emarginata and P. alpestris, both grow- 

 ing plentifully at Kuånerssuit. 



