Contributions to the Flora of West Greenland. 167 



heather which here shows many examples of transitions from the most 

 common MyrtUlus heath with Loiseleuria, Phyllodoce and Ledum to the 

 less common, ahiiost pure Empetrum heath. On July 12th both Myr- 

 tUlus and Empetrum were covered with ripe berries. 



Moreover all the northern Cruciferæ and Compositæ were absent, 

 even such as Lesguerella, Braya^ Arabis arenicola and Erigeron compositus 

 and eriocephalus which were common at Atanikerdluk. 



The following new and additional species may be mentioned: 

 Juncus supinus which has only been recorded a few times from Green- 

 land and previously not north of 68°39'; Potamogeton filiformis and 

 Arnica alpina n. f. inundata growing in the stiff clay of a desiccated 

 pond which probably contained water during the greater part of the 

 season. It looked most ciirious and had developed long, horizontal under- 

 ground shoots, some exceeding one meter. Nearly all the specimens 

 were sterile and resembled a broad-leaved Luzula. 



From Sarqaq we visited Naiijat in an Umiaq and here perhaps, 

 I saw the most hixiiriant vegetation met with in the course of the whole 

 trip, Near the landing place Arahis Holboelli, and Draba aurea abounded 

 together with Antennaria intermedia and probably a new species of the 

 same genus. 



Behind the coast cliffs of tiifa and basalt a depression is occupied 

 by a swampy valley with a series of small lakes and ponds all more 

 or less overgrown by an occasionally floating carpet of vegetation in 

 which Carices and Eriophoræ as high as one metre played a most con- 

 spicuous part, together with a low scrub of willows which seldom occur 

 in such piaces. This treacherous border of the swamps was very difficult 

 to approach and only by stripping was it possible to get near the edge. 

 By means of an apparatus constructed of my photographic tripod and 

 a pickaxe I was fortunate enough to dredge up a few interesting aquatic 

 piants : Potamogeton filiformis and groenlandicus, Sparganium submuticum^ 

 Callitriche autumnalis, Bippuris, Ranunculus confervoides and Heleo- 

 charis acicularis f. submersa. 



A couple of loons had obviously nested among the willows: mosses 

 y^evQ brought up from the edge and amongst them I saw numerous 

 specimens of a Limnæa (probably Vahlii or Holboelli), a very scarce 

 animal on this latitude. In a small pond near the shore I found numerous 

 sterile specimens of Ranunculus reptans. 



In the evening we returned to Sarqaq and from there proceeded 

 for Godhavn via Ritenbenk and Jacobshavn. 



