CONTRIBUTIONS TO WESTERN BOTANY. 677 



and nigrescent, with short stiff hair; plants otherwise 

 nearly glabrous. 



Astragalus Hornii var. minutiflorus. Flowers about 

 2|" long; calyx teeth blunt and short; tube i" long; pods 

 nearly oval, with an acuminate beak, 2|" wide, 4" long, 

 including the beak, 3-6 in a close head; a trifle sulcate 

 ventrally, nearly smooth, and whole plant nearly smooth; 

 peduncles slender, 2-2^'' long, shorter than the leaves; 

 this has the habit of A . lentiginosiis var. diaphaniis. 



San Jorge, Lower California, Brandegee, March 17, 

 1889, on saline flats. 



OxYTROPis AcuTiROSTRis (Watson, P. A. A. 20, 360, 

 1885). 



Astragalus aaitirostris Watson, 1. c. 



Astragalus streptopus Greene. 



An examination of flowering specimens of Greene's 

 species and of the duplicate type specimens of A. acutir- 

 ostris make it certain that this is a true Oxytropis and not 

 an Astragalus. Avery valuable character separating this 

 genus from Astragalus, which seems to have been at least 

 partially overlooked, lies in the wings, which are always 

 enlarged and lobed at the tip, generally very much en- 

 larged and crumpled, and little like any American As- 

 tragali, though A. calycosiis has lobed wings. 



Should it be necessary to reduce this genus to Spiesia, 

 the name must be S. acutirostris (Watson). 



OxYTROPis NOTHOXYS (Gray, P. A. A. 6, 232, 1866). 



Astragalus nothoxys (Gray, 1. c.) 



Spiesia nothoxys (Gray). 



This species is manifestly an Oxytropis, and has been 

 confounded by most Arizona collectors with A. Arizotii- 

 cus, having been distributed widely as that species. 



Hedysarum boreale var. leucanthum (Greene, Pitt. 

 September 20, 1892, page 294). Hedysarum jlavescens 



