642 



and the peduncles, by the much sparser stellate hairs towards the 

 tops of the few and broad phyilaries and lastly by its rather 

 small involuere with eonical base. H. færoerne is undoubtedly 

 very closely related to H. stictophyllum Dahlst. [Herbarium Hiera- 

 ciorum Scandinaviæ. Cent. IV (1893) No. 81] from Øxendalen in 

 Norway, but in spite of their having several points in common, 

 the latter is well distinguished by its glabrous stem, which is hairy 

 only at the leaf-insertions, its broader, fewer toothed, glabrous 

 leaves, hairy only on the median nerve beneath, its glabrous pe- 

 duncles covered more or less with stellate hairs at the upper part 

 only, its long (50 — 60 mm.) acladium, and lastly by its broader in- 

 volucres with rounded base, and narrower (1 — 1,5 mm.) phyilaries 

 with extremely short and few hairs on the back, almost destitute 

 of stellate hairs, but occasionally sparsely intermixed with extremely 

 small glands. Here it may be remarked that in the British Isles 

 generally, as well as in the Shetlands, a form occurs which is ex- 

 actly identical with H. stictophyllum, and is distinguished from it 

 only by its phyilaries being occasionally more richly covered with 

 hairs, and by its leaves being frequently more finelv and closely 

 toothed 1 . Both the latter forms undoubtedly belong to the same 

 species and may at most be reckoned as two geographical races. 

 Though H. færoerne belongs to the same group of species as H. sticto- 

 phyllum and its British parallel form, yet it differs so considerably 

 from both of them, that it is justifiable to give it a separate name, 

 and either classify it — as I have done — as a distinct species, 

 or at least as a sub-species or variety. It has unquestionably been 

 developed more recently in the Færoes. The occurrence of H. sticto- 

 phyllum on the west coast of Norway, where Atlantic species oc- 

 cur dispersed here and there right up to Finmarken, and the 

 faet of its parallel form being widely distributed in Great Britain, 

 seem to suggest that the group of forms to which it belongs should 

 be referred to the Atlantic floral element. This form doubtless 

 immigrated to the Færoes at a period when the climate there was 

 warmer than now, and later on developed into the form I have 

 named H. færoeuse. These forms throw an interesting light — so 

 it appears to rae — on the relationship between the ditferent lloral 

 districls in which they occur. 



1 I have seen specimens of this form from Wales, Carnarvonshire W. R. 

 Linton), Scotland, Perth. Fortingal, and Skye W. \\. Linton), and the Shetland 

 Islands (W. H. Beeby). 



