STANDLEY FLORA OF GLACIER PARK. 373 



Leaflets and stems without glands; corolla yellowish white or yellow. 



Stems usually 15 to 20 cm. high; calyx without black hairs. 5. O. gracilis. 

 Stems usually less than 15 cm. high; calyx with black hairs. 

 Corolla about 1.5 cm. long; flowers few, yellowish white. 



6. O. alpicola. 



Corolla about 2 cm. long; flowers numerous, yellow 7. O. spicata. 



1. Oxytropis deflexa (Pall.) DC. Occasional at low altitudes, in woods or thickets. 

 Alaska to N. Mex. and Idaho; also in Asia. {Aragallus deflexus Heller.) — Stems 

 ascending, 10 to 40 cm. long, loosely hairy; leaflets 25 to 41, 5 to 15 mm. long, acute, 

 loosely hairy; flowers dirty white, tipped with blue, 6 to 9 mm. long, in loose 

 racemes; pod black-hairy. 



2. Oxytropis splendens Dougl. Frequent on the east slope at low altitudes, on 

 open hillsides or flats. Yukon to B. C, N. Mex., and Minn. {AragaUus splendens 

 Greene; A. richardsonii Greene.)— Plants 10 to 30 cm. high, covered with long loose 

 silky hairs; leaflets very numerous, 8 to 20 mm. long, acute or obtuse; flowers 

 red-purple, 10 to 15 mm. long, in dense spikes; pods 1 to 1.5 cm. long, densely hairy. 



3. Oxytropis parryi A. Gray. Above Sexton Glacier, on wdnd-swept rocky summit. 

 Mont, to N. Mex. (Aragallus pairyi Greene.)— Plants prostrate or nearly so, tufted; 

 leaflets 11 to 19, 4 to 8 mm. long, silky-hairy; calyx black-hairj-, corolla purple, 

 1.5 cm. long; pods 12 to 20 mm. long. 



4. Oxytropis viscida Nutt. Frequent on the east slope at low altitudes, on dry 

 open hillsides. Yukon to Nev. and Wyo. {Aragallus viscidus Greene; A. viscidulus 

 Rydb.)— Plants 10 to 15 cm. high, forming dense clumps, very viscid and somewhat 

 hairy; leaflets numerous, 5 to 12 mm. long, acute or obtuse; flowers in dense spikes; 

 corolla 12 mm. long; pods 1 to 1.5 cm. long, black-hairy. 



5. Oxytropis gracilis (A. Nels.) Jones. Common on the east slope at low altitudes, 

 on prairie or open hillsides. Alta. to Idaho and S. Dak. (Aragallus gracilis A. 

 Nels.)— Plants densely tufted, thinly silky-hairy; leaflets 21 to 31, 1 to 2 cm. long, 

 acute; flowers in dense, often long spikes; corolla 1.5 cm. long, yellowish white; 

 pods about 2 cm. long. 



6. Oxytropis alpicola (Rydb.) Jones. Common above timber line in meadows or 

 on rock slides. B. C.,'Alta., and Mont. (Aragallus alpicola Rydb.)— Plants often 

 densely tufted; leaflets 9 to 17, 5 to 10 mm. long, obtuse or acute, with appressed 

 silky hairs. 



7. Oxytropis spicata (Hook.) Standi. East entrance, on hillsides, Umbach. 

 Alta. to Wyo. and S. Dak. (Aragallus spicatus Rydb.)— Leaflets oval or oblong, 

 8 to 20 mm. long, usually obtuse, thinly silky; pods often black-haiiy. 



9. VICIA L. 



1. Vicia americana Muhl. Vetch. Frequent at low altitudes, in woods or 

 thickets. B. C. to Ariz., Va., and N. B.— Slender perennial, 0.3 to 1 meter high, 

 nearly glabrous, climbing by tendrils at the ends of the leaves; leaflets 10 to 14, 

 oval or oblong, 1.5 to 3 cm. long, entire; flowers purple, 1.5 to 2 cm. long, in racemes; 

 pods flat, glabrous, 2 to 3 cm. long. 



10. LATHYRUS L. 



1. Lathyrus ochroleucus Hook. Vetchling. Frequent at low altitudes, in moist 

 woods or thickets. B. C. to Wyo., N. J., and Que.— Slender perennial, 0.3 to 1 

 meter high, glabrous, climbing by tendrils at the ends of the leaves; leaflets 4 or G, 

 oval, 2 to 5 cm. long, entire, pale beneath; flowers yellowish white, 1.5 cm. long, 

 5 to 10 in each raceme; pod flat, glabrous, 4 cm. long. 



