80 H. G. SIMMONS. [sec. arct. exp. fram 



Arsibis arenicola, (Richards.) Gelert. 



Eutrema arenicola, Richardsox, in Hooker, F1. Bor. Amer. I, 1840; Sisymbrhtm 

 Jiuniifusum, Vaiil, F1. Dan.; Lange, Consp. Fl. Groenl.; Arabis hutnifnsa, 

 Watson, Contr. Amer. Bot. ; Britton & Brown, III. Fl.; Parrya arenicola, 

 Hooker, Outl. of Distrib.; Greely, Rep. (?); Arahis arenicola, Gelert, Not. 

 Arct. PI.; Simmons, Prel. Rep. et Bot. Arb. 



Fig. Fl. Dan., T. 2297; Hooker, Fl. Bor. Amer., I, T. 24; Gelert, 1. c, 

 fig. 1. 



The synonyms and distribution of this plant are also very thoroughly 

 examined by Gelert, 1. c, p. 287—91, so as to make it quite unneces- 

 sary to go into details about it. It may only be added that the plant 

 has nothing to do with A. lyrata, L., to which it is referred in the 

 Index Kewensis. 



The EUesmereland specimens, of which I have only a couple, are 

 very small with somewhat more dentate leaves than in the figures quoted, 

 for the rest, they are well in accord with them as also with specimens 

 from Greenland in the Copenhagen herbarium. As they are rather hairy 

 in the lower part of the stem and in the leaves, they may be referred 

 to var. piibescens, (Wats.) Gel. 



In the only locality where I found it, the plant grew in clay soil 

 mixed with gravel, in company with Lesqiierella, Drabae, etc. At the 

 time it was found, June 11th, 1899, it had only some pods of the pre- 

 vious year, with ripe seeds. 



Occurrence. Grinnell Land: Discovery Harbour (Greely) ; I think 

 there need be no doubt about the determination, as the plants of the 

 expedition were examined by Watson among others; indeed there is a 

 note of interrogation put after the name (Greely, 1. c, p. 12) but the 

 plant now being found also further south, the Grinnell Land locality 

 probably has reference to it. Hayes Sound, innermost part of Beitstad 

 Fjord, immediately in front of the bottom glacier (4266). 



Distribution: Western Greenland, Arctic America, Labrador, 

 Alaska. 



Drab a alp in a, L. 



D. alpina, Linnaeus, Sp. plant., 1753; Gelert, Not. Arct. PI.; Lange, Consp. Fl. 

 Groenl,; Kruuse, Li&t E. Greenl.; Nathorst, N. W.Gronl. ; Hart, Bot. Br. Pol. 

 Exp.; Greely, Rep.; Hooker, Fl. Bor. Amer.; Britton & Brown, III. Fl.; Kjell- 

 man, in Vegaexp.; Ledebour, Fl. Ross.; Nathorst, Nya bidr. 



Fig. Fl. Dan., T. 56; Sv. Bot., T. 771; Gelert, 1. c, fig. 11. 



Gelert, 1. c, has begun the comprehensive work of unifying the 

 statements in literature concerning the genus Drdba, and he has taken 



