PIPER—FLORA OF THE STATE OF WASHINGTON. 367 
2. Hedysarum sulphurescens Rydberg, Bull. Torr. Club 24: 251. 1897. 
Hedysarum flavescens Coult. & Fisher, Bot. Gaz. 18: 300. 1893, not Regel & Schmalh. 
1882. 
Type Locatiry: Helena, Montana. 
Rance: British Columbia to Saskatchewan and Wyoming. 
SPECIMENS EXAMINED: Loomis, /lmer 551. 
ARAGALLUS. Locoween. 
1. Aragallus gracilis A. Nelson, Erythea 7: 60. 1899. 
TyPE Loca.ity: “Limestone Range in the Black Hills, Wyoming.” 
Rance: Washington to Montana and Wyoming. 
SPECIMENS EXAMINED: Olympic Mountains, Elmer 2532; Loomis, Elmer 595. 
Professor Greene erects a new species, A. luteolus, on Elmer’s 2532.4 
2. Aragallus monticola (A. Gray) Greene, Pittonia 3: 212. 1897, 
Oxytropis monticola A, Gray, Proc. Am. Acad. 20: 6. 1885. 
Type Locatity: Northwestern Wyoming. Collected by Parry. 
RanGE: Washington to Wyoming, Dakota, and Alberta. 
SPECIMENS EXAMINED: Olympic Mountains, Grant 21; Flett 134, 803; Goat Mountains, 
Allen 245. 
PHACA. MILK VETCH. 
Pods membranaceous, thin, much inflated. 
Herbage slightly pubescent; pods 2-celled........22.2222.-.2.- 1. P. lentiginosa. 
Herbage silky or villous; pods 1-celled. 
Pods very thin, 3 to 5 em. long.......2 2222.22.22 eee ee eee 2. P. hookeriana. 
Pods firm, 10 to 12 mm. long... 22.22.2222 22.22 eee ee ee eee 3. P. suksdorfii. 
Pods coriaceous or chartaceous, not inflated. 
Herbage long-hairy or woolly. 
Pods woolly or villous, not compressed. 
Pods 1-celled, somewhat curved, soft-woolly. 
Flowers ochroleucous.........-.-2-2-2-.-22++2--- 4. P. purshii. 
Flowers purple. 
Stems elongate, prostrate; leaflets 21 to 25.... 5. P. inflera. 
Stems erect, very short; leaflets 7 to 11.....-- 6. P. glareosa. 
Pods 2-celled, small, ovate, short-villous. 
Spike dense; flowers 10 mm. long................. 7. P. spaldingii. 
Spike loose; flowers 6 mm. long. ......-.-...-.-.. 8. P. lyallii. 
Pods glabrous, strongly compressed, faleate.......2.2.--2--- 9. P. succumbens 
Herbage and pods glabrous or short-pubescent. 
Pods conspicuously stipitate, the stipe equaling or exceeding 
the calyx. 
Calyx oblique; pods curved or coiled, the sutures promi- 
nent. 
Pods coiled, glabrous...............2222-2-2-2--- 10. P. speirocarpa 
Pods curved, not coiled, 
Leaflets 5 to 7 pairs, oblong or obovate; stipe as 
long as the calyx... 2.222222 eee eee 11. P. sinuata. 
Leaflets 6 to 9 pairs, linear; stipe much exceed- 
ing the calyx..-. 2... _. --.ee-ee-- 12. P. podocarpa. 
Calyx not oblique; pods straight or nearly so. 
Neither suture of the pods impressed. 
@ Proc. Biol. Soc. Wash. 18: 17. 1905. 
