1898-1902. No. 2.] VASCULAR PLANTS OF ELLESMERELAND. 167 



I have had no opportunity of forming an opinion about, but I do not 

 think they are to be beHeved in, as the authors by whom these collec- 

 tions are treated have made rather many mistakes in other cases (except 

 Wetherill), and as there is a considerable probability that forms of 

 P. glaiica or P. ceniala which may bear a rather deceptive resemblance 

 to P. alpina, might have been taken for it (cf. P. cenisia). This view 

 receives considerable further support in the fact that no specimens from 

 the localities mentioned for P. alpina by Hart (Bot. Br. Pol. Exp., p. 

 41) are to be found in the collections at Kew and in the Nat. Hist. 

 Museum. Hart records P. alpina besides from Disco also from Bes- 

 sels Bay in noith-western Greenland, from Discovery Harbour and 

 Walrus Island in Grinnell Land, and from Cape Sabine, but as no 

 specimens exist to confirm his statements, I think that the species ought 

 to be excluded from the EUesmereland flora. 



Poa la,xa, Haenke. 



This species also is recorded by Greely from Discovery Harbour, 

 and Hart has it as a form of P. flexiiosa. 1 have, however, seen no 

 specimens to bear out the later statement, and I think it most right to 

 exclude this also from the tlora, notwithstanding it must be admitted 

 that the plant could perhaps have reached so far north. However, 

 Gelert in OsTENFELD, Fl. Arct., p. 124, who gives several localities in 

 the Arctic American Archipelago for it, has excluded Grinnell Land. 



Poa cenisia, All. 



p. cenisia, Allionf, Auct. Flor. Ped., 1789; Gelert, in Ostenfeld, Fl. Arcl. ; Kruuse, 

 List E. Greenl. ; Greely, Rep.; Bbitton & Brown, RI. Fl.; Ledebour, Fl. 

 Ross.; Hartman. Skand. Fl. ; Kruuse, Jan May.; P. fiexuosa, Host, Ic. descr. 

 gram. Austr. ; Wahlenberg, Fl. Carp.; Lange, Consp. Fl. Groenl. ; Nathorst, 

 N. W. Gronl.; Hart, Bot. Br. Pol. Exp., ex p.; Hooker, Fl. Bor. Amer. ; 

 Kjellman, in Vegaexp. ; Nathorst, Nya bidr. ; P. arctica, R. Brown, Chlor. Melv.; 

 Greely, 1. c; Hooker, 1. c. ; Macoun, PI. Pribilof; Ledebour, 1. c. ; Kjellman & 

 LuNDSTROM, Fan. Nov. Semi.; P. filipes, Lange, I.e.; P. trichopoda, Lange, Fl. 

 Dan., Fasc. 49, et 1. c. 



Fig. Fl. Dan., T. 2529, 2885; Host, 1. c, T. 26; Sv. Bot, T. 70*. 



As for the definition of this species I can only agree with Gelert, 

 1. c. It is rather difficult to keep apart from P. pratensis, from which 

 it differs principally in characters of habit. Proliferous forms can hardly 

 be referred with certainty to either of them. 



