PEA FAMILY 473 



peduncles 1 dm. or more long; flowers 10-12 mm. long; calyx-tube 2 mm. long, 

 glabrous below, pubescent towards the throat; calyx-teeth subulate, the lower 

 3-3.5 mm. long. Valleys: Ida. Subtnont. Jl. 



12. T. longipes Nutt. Stem solitary, erect, simple, 1-3 dm. high, spar- 

 ingly strigose above; leaflets lanceolate or oblong, acute, 2-4 cm. long, or the 

 lower elliptic-obovate, obtuse, glabrous above, pubescent beneath; peduncles 

 1-2 dm. long; calyx pubescent; tube 2 mm. long; teeth setaceous, 5-7 mm. long; 

 corolla white, 10-12 mm. long. Meadows: Wash. — Ida. — Calif. Submo7it. — 

 Mont. Je-Jl. 



13. T. latifolium (Hook.) Greene. Stems strigose, decumbent, 1-2 dm. 

 high; leaflets oval or obovate, 1-2 cm. long; peduncles 5-10 cm. long; calyx villous 

 throughout; tube 2 mm. long; teeth subulate, about 3 mm. long; corolla 12-15 

 mm. long. T. longipes latifolium Hook. (?) T. brachypus Blankinship. Grassy 

 slopes: Ida. — Wash. — Ore. Submonl. — Mont. My-Je. 



14. T. Aitonii Rydb. Stem 3-4 dm. high, glabrous below, strigose above; 

 leaflets ovate, thin, obtuse or rounded and mucronate at the apex, 2-4.5 cm. 

 long, glabrous above, sparingly hairy beneath; peduncles several, 1-2 dm. long; 

 calyx pubescent throughout; tube 2 mm. long; teeth subulate, about 4 mm. 

 long; corolla about 12 mm. long. Meadows: Ida. Submont. Je. 



15. T. Rydbergii Greene. Stems usually erect, usually single, 2-4 dm. 

 high, glabrous below, strigose above; leaflets lanceolate to oval, 2-4 cm. long or 

 those of the basal leaves shorter and broader, usually acute, sharply denticulate, 

 glabrous or slightly pubescent beneath; peduncles .5-10 cm. long; calyx pubes- 

 cent; tube 2 mm. long; teeth subulate-setaceous, 4—5 mm. long; corolla white, 

 about 15 mm. long. T. longipes reflexum A. Nels. Wet meadows: Ida. — Utah 

 — Colo. — Mont. Submont. — Mont. Je-Au. 



16. T. Douglasii House. Stem erect, strict, glabrous, 3-7 dm. high; leaf- 

 lets veiny, glabrous, 2-6 cm. long; those of the lower leaves broader and shorter; 

 peduncle 5-10 cm. long; head usually somewhat ellipsoid; flowers somewhat re- 

 flexed in fruit; calyx glabrous, veiny; tube nearly 3 mm. long; teeth subulate, 

 about 5-6 mm. long; corolla 12-15 mm. long. T. altissimum Dougl., not Loisel. 

 Low prairies and meadows: Wash. — Ida. — Calif. Submont. Je-Jl. 



17. T. Beckwithii Brewer. Stem stout, erect, glabrous, 3-5 dm. high; 

 leaflets elliptic or oval, the upper acute, the lower rounded at the apex, strongly 

 veiny, glabrous, 2-4 cm. long; peduncles 1-2 dm. long; heads globose; flowers 

 reflexed in age; calyx glabrous; tube nearly 3 mm. long; teeth subulate, 3-4 mm. 

 long; corolla reddish purple. Wet meadows: S.D. — Mont. — Ore. — Calif. Plain 

 — Mont. Je-Jl. 



18. T. Kingii S. Wats. Stem erect, 2-3 dm. high, glabrous; leaflets of the 

 lower leaves oval or elliptic, rounded at the apex, dentate, veined, glabrous, 1.5- 

 4 cm. long, those of the upper leaves linear-lanceolate, sharply dentate, acumin- 

 ate; peduncles 8-10 cm. long, glabrous; heads globose; flowers reflexed in fruit; 

 calyx glabrous or nearly so; tube nearly 3 mm. long; teeth subulate, about 4 

 mm. long; corolla reddish purple. Wet meadows: Utah. Mont. Je-Au. 



19. T. hybridum L. Stems several, glabrous, ascending or erect, 3-6 dm. 

 high; leaflets broadly obovate, 1-3 cm. long, glabrous, rounded or rarely emargin- 

 ate at the apex; peduncles 5-10 cm. long; heads globose; flowers reflexed in fruit; 

 calyx glabrous; tube 1.5-2 mm. long; teeth subulate, 2-3 mm. long. Pastures 

 and waste places: N.S. — Fla. — Calif. — Wash.^W. Ind.; cultivated and escaped, 

 native of Eu. Je-S. 



20. T. repens L. Stems creeping, 1-6 dm. long, glabrous; leaflets obovate, 

 emarginate or obcordate, 0.5-2 cm. long; glabrous; peduncles 1-3 dm. long; 

 flowers reflexed in age; calyx glabrous or essentially so; tube about 2 mm. long; 

 teeth lance-subulate, 1.5 mm. long; corolla 7-8 mm. long. Waste places, road- 

 sides and pastures: N.S. — Fla. — Calif. — B.C.; W. Ind.; cult, and escaped; native 

 of Eurasia. Ap-0. 



21. T. nanum Torr. Leaflets from linear-oblanceolate to cuneate-oblong, 

 glabrous, strongly veined, 5-10 mm. long; peduncles 1-3 cm. long; heads 1-3- 



19* 



