278 Morten P. Porsild. 



the upper and lower surfaces of the leaves on A. groenlandica are nearly 

 always evenly and closely felted ; there is besides a rather characteristic 

 difference as regards the appearance of the felt, difficult to describe, but 

 fairly easily noticed, when first attention has been drawn to it. The 

 felt of all specimens of A. dioeca examined by me, also those found in 

 the high mountains as well as those in Subarctic regions, is pure white, 

 almost shining, close, but fine, partly showing the unevenness of the 

 under surfaces of the leaves; it resembles cloth, much worn. The felt 

 of A. groenlandica (and of the following species, closely related to this) 

 is, on the other hand, close and coarse, of a faint dull grey-yellow or 

 grey-green tinge and resembling new cloth. 



The bristles of the pappus are perceptibly thicker and more coarsely 

 toothed than those of A. dioeca; it must however be noted, that in this 

 respect a specimen of A. dioeca from Kolgujew resembled A. groen- 

 landica. 



A . groenlandica, probably nowhere common, is met with in the more 

 southerly parts of Greenland, on the west coast in several places between 

 60° and 67°, more often in the more southerly of these latitudes ; on the 

 east coast it has been found twice at 61° and 66° respectively. Fernald 

 and SoRNBORGER havc mentioned in the Ottawa Naturalist, 1899, pag. 106 

 (Some recent additions to the Flora of Labrador) an "^. hyperborea 

 Don", and this may very well be the same as ours, Labrador and the 

 extreme south of Greenland having so many species in common. 



On Iceland neither A. dioeca nor any species closely related to this 

 is found (A. alpina is however represented), and this also proves that 

 A. groenlandica is of American origin. 



I have seen specimens from the following places: 



Julianehaab, locis siccioribus, leg. Vahl. 



— Elven, leg. Meldorf. 



Tunugdliarfik, leg. Rosenvinge. 

 Fiskernæs, leg. Rosenvinge. 

 Ikatok, locis aridis, leg. Vahl. 

 Godthaab, Baals Revier, leg. Vahl. 

 — , Ameragdla, leg. Ostenfeld. 



4. Antennaria intermedia (Rosenvinge) n. sp. 



Syn.: A. alpina var. intermedia L. K. Rosenvinge, Andet Tillæg til 

 Grønlands Fanerogamer og Karsporeplanter; Medd. om Grl. III, Forts. 3, 

 1892, pag. 698, "foliis periclinii obtiisis, stylo saepe corolla breviore" ; 

 A. alpina c?, Th. Holm: Beiträge zur Flora Westgrönlands, Engler's Bot. 

 Jahrb. 8, 1887, pag. 310. (See Figs, lb, 2a, 7). 



A. groenlandicae proxime af finis, abs qua notis sequentibus divert: 



Inflorescentia dense aggregata, subglobosa, calathia numerosiora (8 — 14) 

 et minora, siibsessilia. Squamae involucri scariosis partibus obscure oli- 



