First Report on the Flora of Wyoming. 179 



were designated by Mr. Bebb as ''forma sat siui^utaris," on account 

 of the occurrence in the same individual of the following peculiar- 

 ities : Leaves unusually short and broad, coarsely serrate and 

 very conspicuously stipulate. 

 Salix Candida, Fleugge, Willd. Sp. PI. iv, 708 (1806). 



Observed only in Centennial Valley, August 20, 1895 (No. 1755). 

 Salix chlorophylla, Anders. Monogr. 138 (18(>7). 



Widely distributed; Union Pass, August 13, 1894 (No. 1029); 

 Centennial Valley, August 19, 1895 (No. 1741). 

 Salix cordata, Muhl. Neue Schr. Ges. Nat. Fr. Berlin, iv, 23(3 (1803). 

 Collected but once; Laramie Peak, August 6, 1895 (No. 1598). 



Salix curtiflora, (Anders ) Bebb. 



This very rare plant from two localities ; not reported from this 

 state before, I think, except by Mr. Tweedy. 



Boulder Creek, August 26, 1894 (No. 1122); Centennial Valley, 

 August 19, 1895 (No. 1754). 

 Salix desertorum, Rich. App. Frank, Journ. 371 (823). 



On a hummocky heath in Centennial Valley, August 20, 1 895 

 (No. 1759). 



Salix desertorum elata, Anders. 



Rare, alpine ; Union Peak, August 13, 1894 (No. 1072); LaPlata 

 Mines, August 22, 1895 (No 1818). 



Salix desertorum fruticulosa, Anders. 



Infrequent in an open, heathlike park in Union Pass, August 11, 

 1894 (No. 913). 



Salix flavescens, Nutt. Sylv. i, 65 (1842 53). 



This beautiful species is the first to put out its blossoms of all our 

 • willows ; the leaves follow very tardily. 



Thus far noted only in the Laramie range ; Pole Creek, May, 12, 

 1894 (No. 24) and at various other times; Laramie Peak, August 

 6, 1895 (No. 1586). 



Salix lasiandra Fendleriana, (Anders.) Bebb. 



Not infrequent; Popo Agie River, August 2, 1894 (No. 737); 

 Pole Creek, June 30, 1895 (No. 1434). 

 Salix leucosericea, Nob. n. sp. 



In communicating this name to-me Mr. Bebb made the following 

 comments upon the species : " It will shortly appear as above in a 



