424 RyDBERG: Rocky MOUNTAIN FLORA. 
ArAGALLUs Branxinsurpit A. Nelson Erythea 7: 58 (fruiting 
specimens). 1899. 
Aragallus collinus Rydb. Mem. N. Y. Bot. Garden. 1: 254. 
1900. Not A. collinus A. Nelson 1899. 
ARAGALLus Bessey: Rydb. Mem. N. Y. Bot. Garden I: 250. 
1900. 
Oxytropis argentata Pursh Fl. Am. Sept. 473. 1814. Not. 0. 
argentata Persoon. 
Aragallus Blankinshipii A. Nelson, Erythea, 7: 58 (flowering 
specimens). 1899. 
Aragallus monticolus A. Nelson, Erythea '7: 62, in part. 1899. 
Not Oxzytropis monticola A. Gray. 
Oxytropis Besseyi Blankinship, Mont. Agr. Coll. Sci. Stud. Bot. I: 
80. 1905. 
Aragallus atropurpureus sp. nov. 
Acaulescent perennial ; leaves numerous, 3-7 dm. long ; leaf- 
lets oval to oblong, canescently silky-villous, 5-15 mm. long, 3-5 
mm. wide, obtuse or acute ; scape 6-10 cm. long, loosely villous ; 
raceme short and headlike ; 2-3 cm. long; bracts linear-subulate, 
5-10 mm. long; calyx dark, villous with 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 acumr 
nate with a spreading beak, villous, partly black-hairy, thin, half 
2-celled. 
In pubescence and leaf-form, this species most resembles A. 
sericeus, 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. Lamberti group by 
the black-hairy calyx and long calyx-teeth. 
Wyominc: Headwaters of Tongue River, Big Horn Moun- 
tains, 1898, F. Tweedy 125 (type, in flower); xo. 726 (in fruit). 
Hedysarum utahense sp. nov. 
Perennial with a rootstock ; stem 4-6 dm. high, finely ear 
cm. 
