100 Mouten 1*1 Ponsii.n. 



\ ar. uniflora (Lkdih.) Th. W. (= nrctica{C\i. & Sc.ml.) Lgk. = 



P. suhq. var. Pcdorsenii Rydr.) 

 A common dwarf form of tlie preceding. 



1. \ar. vuléaris Cham. & Schl. (an = ridgarifi T>i;hm. 

 IjANGe: Coiispectus p. 8). 



Tn Greenland much rarer than var. pinnalilida. Ordi- 

 narily tlie piants ara slendcr, — rather like specimcns 

 from the Alps, — but \ve have also from luxuriant loca- 

 lities, for instance, Engelskmandens Havn on South 

 Disko, seen vigorous, stout forms. If identical with the 

 var. a of Lange it should be widely distributcd in W cst 

 Greenland. We have only a fcw specimcns from South 

 Disko and Diskofjord. 



2. Var. pallidior Sw. {— y suhviridis Lehm,, Lange 1. c 

 p. 9) is probahly a shade form of the preceding, occurring 

 in copses or among tall grasses. 



3. Var. prostrata Rottb. As to this doubtful and rarely 

 collected form, Ostenfeld (Medd. om Grl. 43, p. 27) has 

 made the suggestion that it might be a luxuriant form 

 of var. pinnatifida from manured soil, to this opinion we 

 can subscribe; we may, however, point out that we did 

 not observe specimcns containing all of the distinguish- 

 ing characters: coarse, prostrate and flattened stems, 

 large leaves with scanty felt, purplish rihs and revolute 

 margins and glomerate flowers. Specimcns of v. pinnati- 

 fida from soil manured to excess are often prostrate with 

 flattened stems and large leaves. When at the same time 

 the piants grow in the shade, the leaves are less tomcnt- 

 ous, but then the flowers are, as a rule, undoubtedly 

 longstalked. The type specimcns of Rottboll wt>re sent 

 to him from Svebdrup, missionary at Disko Bay 1764 — 

 88, and one specimen is said to exist in the herbarium of 

 Poul Egede, missionary at Disko Bay 1736 — 40. The 

 last mentioned collection bclongs lo the Botanical Garden 

 at Copenhagen and probahly this and other types of 

 RoTTBøLi.'s |)lanls may still exist. The specimcns col- 

 lected by HoLBOLL, at Umånafj and mentioned by Osten- 

 feld I. c. were collected between 1825 — 28! 



Besides Rottboi.i.'s specimcns (collected near Ja- 

 kobshavn or Christianshaab?) the var. prostrata has been 

 recorded from Uperniviarssuk 73°28' (Ryder). Ryd- 

 BERc; (I. r. pag. 180) considcred this plant as belonging 



