424 Rydberg : Rocky Mountain flora 



Aragallus Blankinshipii a. Nelson Erythea 7: 58 (fruiting 



specimens). 1899. 

 Aragallus colliniis Rydb. Mem. N. Y. Bot. Garden, i : 254. 



1900. Not A. colliniis A. Nelson 1899. 

 Aragallus Besseyi Rydb. Mem. N. Y. Bot. Garden i : 250. 



1900. 

 Oxytropis argcntata Pursh Fl. Am. Sept. 473. 1814. Not. O. 



argcntata Persoon. 

 Aragallus Blankinshipii A. Nelson. Erythea, 7: 58 (flowering 



specimens). [899. 

 Aragallus monticolus A. Nelson, Erythea 7 : 62, in part. 1899. 



Not Oxytropis niontuola A. Gray. 

 Oxytropis Bcsscyi Blankinship, Mont. Agr. Coll. Sci. Stud. Bot. I : 



80. 1905. 



Aragallus atropurpureus sp. nov. 



Acaulescent perennial ; leaves numei'ous, 3-7 dm. long ; leaf- 

 lets oval to oblong, canescently silky-villous, 5-1 5 mm. long, 3-5 

 mm. wide, obtuse or acute ; scape 6-10 cm. Ion", loosely villous; 

 raceme short and headlike ; 2-3 cm. long ; bracts linear-subulate, 

 5-10 mm. long ; calyx dark, villous v»'ith mixed black and white 

 hairs ; tube 5 mm. long, 3 mm. wide ; teeth black-hairy, subulate, 

 4 mm. long; coralla dark-purple, about 15 mm. long; wings 

 deeply emarginate ; keel with a rather long ascending tip ; leg- 

 ume ovoid, less than 1.5 cm. long, 15 mm. thick, abruptly acumi- 

 nate with a spreading beak, villous, partly black-hairy, thin, half 

 2-celled. 



In pubescence and leaf-form, this species most resembles A. 

 sericcics, but it is a much smaller plant, has only half 2-celled, 

 shorter and more curved pod. It is easily distinguished from all 

 the other purple-flowered species of the A. Lavibertii group by 

 the black-hairy calyx and long calyx-teeth. 



Wyoming : Headwaters of Tongue River, "Big Horn Moun- 

 tains, 1898, F. Tweedy 12 s (type, in flower); 710. 126 (in fruit). 



Hedysarum utahense sp. nov. 



Perennial with a rootstock ; stem 4-6 dm. high, finely strigose, 

 stipules triangular, acuminate, 5-8 mm. long; leaves —15 cm. 

 long; leaflets 11 — 17, elliptic, oval or oblong, usually rounded at 

 both ends, 1-3 cm. long, 5—10 mm. wide, glabrous above, finely 



