192 Fey^nald — Relationships of some American 



B. PUMiLA, L., Mant. 124 (1767). B. alpestris, Fries, Summ. 

 Yeg. Scand., i, 212 (1846). B. fruticosa, var. hu?nilis, 

 Eeiclienb. Ic. Fl. Germ., xii, %. 1280 (1850). £. nana var. 

 alpestris, Kegel, Mon. Bet. 45 (1861). B. Grayi, Kegel, Bull. 

 Soc. Imp. Nat. Mosc, xxxviii, 406, t. 6, figs. 9-13 (1865).— 

 Labrador and Newfoundland to Ontario, south to Morris 

 Co., New Jersey, Champaign Co., Ohio, Lake Co., Indiana, 

 and McHenry Co., Illinois ; Greenland, Scandinavia, north- 

 ern Germany, Finland, Lapland, Kussia, Siberia. (PL YI, 

 figs. 33-38.) 



B. PUMILA, var. glandulifera, Kegel in DC, 1. c. 173 (1864). 

 — Ontario and Michigan to Minnesota, Saskatchewan and 

 British Columbia, south in the mountains to Idaho and 

 Oregon. 



B. GLANDULosA, Michx., Fl. Bor.-Am., ii, 180 (1803). B, 

 nana of various American authors, not L. B. Littelliana^ 

 Tuckerman, this Journal, xlv, 30 (1843). — Greenland and 

 Hudson Straits to Kamtschatka, and the Altai Mts. of 

 Siberia ; south in eastern America to the higher mountains 

 of Maine and New Hampshire; in the interior to Lake 

 Superior and Manitoba ; and in the western mountains to 

 South Dakota, Colorado, Utah, and northern California. 

 (PL YI, figs. 39, 40.) 



B. GLANDULOSA, var. ROTUNDiFOLiA, Kegel in J)C^ 1. c. 172 

 (1864). B. rotundifolia, Spach, 1. c. 194 (1841). B. nana^ var. 

 sihirica^ Ledeb., Fl. Koss., iii, 654 (1849). — Greenland and 

 northern Labrador to Kamtschatka, and the Altai Mts. of 

 Siberia, south to the higher mountains of Maine and New 

 Hampshire, and along the coast of Alaska. Perhaps hybrid- 

 izing with B. pendula. (PI. YI, figs. 41-44.) 



