The Flora of Disco Island and Adjacent Coast of West Greenland. • 23 



being probably either hybrids or chance mutations, endemic species 

 in an embryo state. 



They are indicated thus: • 



The distribution in the adjacent parts to the south of the area is 

 briefly subjoined, quoted ahnost exckisively from L. Kolderup Rosen- 

 vinge's carefully revised "Andet Tillæg etc". As to the distribution 

 to the north of the area we have made use of Abromeit's revision of 

 Vanhoffer's collections, but especially of our own observations pub- 

 lished in "Vascular Piants 71°— 73°". 



Giyptogamae vasculares. 



I. Polypodiaceae. 



X 1. Dryopteris Linnæana C. Chr. {Aspidium Dr. (L.) Baumg. 



In herb-mats and copses, often in the shade under rocks, but al- 

 ways in favourably situated, sheltered piaces; especially near the hot 

 springs. 



Disko: The south-coast from Laksebugt to Skansen, from many piaces 

 (several collectors). Disko-Fjord: the north-coast, rarer; the northmost at Kuåner- 

 soq 69°32' (P.). 



Mainland: N. Isortoq 67°1U' (Ros.), Præstefjæld at Holsteinborg (W. & H.), 

 (P. & E.). 



A decided south em type; in vain searched for in a great many 

 favourably situated piaces in the fjords south of Disko-Bay. South 

 qf the here mentioned place from 65°64' and (according to Rosenvinge) 

 common south of 63°. 



All the mentioned piaces in the lowland. Usually sori are found, 

 but sporangia only seen on specimens from KuånersoK. 



During the winter under a thick cover of snow. 



V 2. Dryopteris fragrans (L.) Schott. 



On sheltered, sunny, not too dry rock-shelves; more scarce on 

 stony soil in the heath. 



Diske: Very rare, hitherto only from the vicinity of Godhavn (V.) and basalt- 

 rocks behind Evqitsoq in Diskofjord 69°32' (P.). 



Mainland: Rather common in the gneissic tracts, especially at some distance 

 from the outer coast; from 70° at least to 67°. Still, in the fjords inland from Hol- 

 steinborg, rather common. The southmost locality hitherto known at ca. 64°44'. 



In Greenland a decided northern type; in U. S. A., however, to 

 be found down to New England and Minnesota. 



