44 BOTANICAL GAZETTE [January 



further literature see Schneider in Sargent, PI. Wils. 3 : 146. 1916. 

 — This section, which is represented in America by the following 4 

 species, is a well defined group. The rather exceptional position of 

 S. reticulata among the other willows, which once led A. Kerner to 

 propose the new genus Chamitea for it, becomes less marked by the 

 addition of the American S. nivalis; and the characters of the 

 Reticulatae are further changed by the inclusion of S. leiolepis 

 with glabrous ovaries. S. glacialis referred by Rydberg to this 

 section is a very imperfectly known species, of which the systematic 

 position is still doubtful. 



I. S. RETICULATA L., Sp. PI. 2:ioi8. 1753. — S. reticulata a 

 glabra Trautvetter in Ledeb., F1. Alt. 291. 1833. — S. reticulata b 

 normalis And. in Ofv. K. Vet.-Akad. Forh. 15:133 (Bidr. Kanned. 

 Nordam. Pilarter). 1858.^ — 5. reticulata a typica i. glabra And. in 

 DC, Prodr. 16^:301. 1868. — This willow has the most extensive 

 range of all the known species. In Europe it is reported from the 

 high Pyrenees through the whole range of the Alps to the mountains 

 of Croatia, and northward to Scotland, Scandinavia, Iceland, 

 Spitzbergen, and Arctic Russia, while in Asia it is found on the high 

 mountains from the Ural to Kamchatka and in the Arctic zone from 

 Taimyr Peninsula to the Bering Strait. According to Lange it 

 does not occur in Greenland. In North America I have seen 

 specimens from southern Labrador, western Newfoundland, the 

 northern shores of the Hudson Strait, and the western shore of 

 Hudson Bay to the Coronation Gulf and Bernard Harbor (ii4°46' 

 W. long.), and west of 135° W. long, from the Yukon Territory 

 (King Point and Herschel Island to Lake Bennett) and from Alaska. 

 Here it stretches, as Coville has said, over the Arctic zone, but 

 including the extreme north (Camden Bay), and southward it 

 occurs at timber line on the mountains from the Juneau region to 

 Kodiak Island, and westward to the Aleutian, Pribilof, and St. 

 Matthew Islands. There is also a specimen from the ''Rocky 

 Mountains" (no. 85 Herb. H.B.T., ex Herb. Torrey in N.; 

 m., f.), the exact locality of which is unknown to me. No. 86 also 



9 The same article has been published with slight alterations in the same year in 

 Proc. Amer. Acad. 4: 50 (Salic. Bor.-Am.) and in Walper, Ann. Bot. 5:744. I do not 

 always repeat these quotations. 



