The Flora of Disko Island and Adjacent Coast of West Greenland. 31 



A 25. Potamogeton pusillus an L. ? (P. groenlandicus Hagstr.) 



Collected several times in the vicinity of Diskobugt; perhaps 

 more careful observation will prove the plant to be of not infrequent 

 occurrence. 



Disko: A pond at the blubber-yard at Godhavn 69°15' (P.). 



Mainland: Sarqaq 70°0' (Htz.), the north-limit of the species, Ritenbenk 

 69°45' (S. H.); Jakobshavn 69°13' (Sor.); Claushavn 69°5' (Bg.); Christianshaab 

 Orpigssuit (Htz.) 68°37'; Egedesminde (BL); Sofiahavn 68°25' (BL). 



For the rest only known from a few locahties in the southernmost 

 part of Greenland, most likely overlooked. 



A 26. Potamogeton filiformis Pers. (P. marimis L. p. p.). 



This species has been found a few times in the fjords inland from Holstein- 

 borg 66°58'(W. &H.), and hare later on found to be commonly extended in all smaller 

 ponds (P. & E.); at the head of S. Strømfjord about 67° (Jens.); Uivdhnguaq 66°29' 

 (P. & E.). Southwards it is known from Godthaabfjord and from several localities 

 in the southmost part of Greenland, being no doubt common here. 



The next domain is in the vicinity of the Sydost-Bugt: Manitsoq at Egedes- 

 minde 69°45' (BL); Tasiussarssuaq and the passage to this place about 68°30' (Bg. 

 and others); at the head of Orpigsoq 68°40' (Htz.); Christianshaab 68°45' (V.). 



Further it has been found isolated at Narssaq on Disko 69°52' (Th. Fr.); 

 Nugssuaq Peninsula: Atanikerdluk 7U°6' (Htz.) and Ikerasak 70°3U' (Vh.), the 

 northern limit of the species. 



In some of the mentioned localities the species were flowering. 



IX. Juncaginaceae. 



A 27. Triglochin palustre L. 



On strand-meadows, on lake-shores in marshes and periodically 

 inundicated riverbeds. 



Undoubtedly often overlooked. 



Disko: From localities on the southern coast and Diskofjord (?.); Nordfjord: 

 in the big valley from the head of the fjord about 70° (P.). 



Mainland: From Jakobshavn down to the fjord-complex inland from Hol- 

 steinborg found so often as to be considered common. N. of Jakobshavn found now 

 and then along the coast of Waygat up to Atå 70°15' (P. and others); in the Nord- 

 ost-Bugt at Ikerasak 7()°3n' (Vh.) and tlmånaq 70°43' (Vh.) the northern limit of 

 the species. 



A decided southern type, in the district not ascending to any 

 height worth mentioning. 



Flowers and fructificates abundantly, but not every year. 

 Hibernates abundantly covered by snow and sometimes also by ice. 



