1898-1902. No. 2.] VASCULAR PLANTS OF ELLESMERELAND. 77 



redflowered variety in somewhat drier, but nevertheless moss-covered, 

 rockledges. Flowers from the end of June. 



Occurrence. Grinnell Land, Bellot Island in Lady Franklin Bay 

 (Hart), Discovery Harbour (Greely). Hayes Sound district: Beitstad Fjord, 

 Skriiling Island, Cape Viele (884), Eskimopolis (843), Lastraea Valley, 

 Cape Rutherford, Fram Harbour (454, 640, 1103, 1401), Cocked Hat 

 Island, Bedford Pirn Island (268, and Cape Sabine, Hart), Brevoort Is- 

 land (1208, leg. Fosheim). South coast: Harbour Fjord, in several places 

 (2440, 2464, 2527); Goose Fjord, in several places. West coast: only 

 seen from Braskerud Plain (708, leg. Isachsen). 



Distribution: Both coasts of Greenland, Arctic American Archi- 

 pelago, Arctic America, Labrador, White Mountains, Rocky Mountains 

 to Colorado, Alaska, islands of the Bering Sea, Arctic Asia, Kamshatka, 

 Baical Mountains, Ural, Arctic Russia, Novaja Semlja, Spitsbergen, 

 Franz Joseph Land, Northern Scandinavia, Scotland, Faeroes, Iceland, 

 Jan Mayen. 



Cruciferae. 



Hesperis Pallasii, (Pursh) Torr. & Gray. 



Cheiranthus Pallasii, Pursh, F1. Amer. sept., 1814; Ch. ? Pallasii, Hooker, PL Bor. 

 Amer. ; Ch. pygmaeus, Adams, Descr. plant, min. cogn. ; Greely, Rep. ; Sisym- 

 brium 2}ygniaeum, Trautvetter, Consp. Fl. Nov. Semi.; Kjellman, in Vegaexp. ; 

 Hesperis pyymaea, Hooker, FL Bor. Amer., non Delile; H. Hookeri, Lede- 

 bour, fl Ross. ; fl", Pallasii, Torrey & Gray, FL N. Amer. ; Lange, Consp. Fl. 

 GroenL; Nathorst, N. W. GronL; Hart, Bot. Br. PoL Exp.; Simmons, PreL 



Rep. et Bot. Arb. 



Fig. Hooker, 1. c. I, T. 19. 



As the above synonymic shows, there have been rather different 

 opinions as to the place of this species. An examination of the seed, 

 however, has convinced me that the plant must be referred to the Noto- 

 rhizae of Decandolle, Systema. Consequently, it can be no Cheiran- 

 thus, and it differs from Sisymbrium, where Trautvetter has placed 

 it, in several respects, such as the rather deeply saccate transversal 

 sepals, the deeply divided stigma and the violet petals. Ledebour is 

 quite right in observing that the species-name of Adams cannot be used 

 when the plant is referred to Hesperis, but evidently at first he has not 

 known the Cheiranthus Pallasii of Pursh, which is the oldest name, 

 as he gives it a new one. However in the Addenda (1. c, I, p. 759) 

 he has put Pursh's name among the synonyms. 



Among the Ellesmereland plants, H. Pallasii is pre-eminent by 

 its strongly sweet-scented flower. This quality, as is well known, is 



