386 NORTH AMERICAN FLORA [Volume 24 



5. Orcuttiana 

 One species. 34. T. Oriutlianum. 



6. Palantia 



Pod arched upwards, on recurved pedicels; calyx more or less black-hairy; 

 corolla purplish. 

 Pod glabrous; corolla 13 mm. long; calyx-tube 5 mm. long. 35. T. palans. 



Pod pubescent; corolla 16 mm. long; calyx-tube 6 mm. long. 36. T. amplexum. 



Pod nearly straight, ascending on ascending pedicels. 



Pod glabrous; stem glabrate or sparingly strigose; calyx mostly white- 

 hairy. 

 Corolla white, 15-16 mm. long; pod 2-2.5 cm. long, mottled, rather 



thin-walled; calyx-tube 6 mm. long. 37. T. Wilsoni. 



Corolla purplish, 13-14 mm. long; pod about 1.5 cm. long, not 



mottled, rather firm; calyx-tube 4 mm. long. 38. T. ursinum. 



Pod strigose; stem canescent; calyx black-hairy; corolla 16-17 mm. long. 



39. T. mokiacense. 



1. Racemosa. Pod leathery, distinctly stipitate, pedulous, the stipe longer than the 

 calyx, the body linear, often falcate, the upper suture acute, the lower decidedly sulcate; 

 cross-section cordate or triangular. Tall leafy-stemmed plants, with large ochroleucous or 

 white flowers, the banner moderately arched. 



1. Tium Drummondii (Dougl.) Rydb. Bull. Torrey Club 32: 

 659. 1906. 



Astragalus Drummondii Dougl.; Hook. Fl. Bor. Am. 1: 153. 1331. 

 Tragacanlha Drummondii Kuntze, Rev. Gen. 744. 1891. 



A cespitose perennial; stems 4-10 dm. high, sulcate, villous; leaves spreading or ascending, 

 7-15 cm. long, the rachis sulcate, villous; stipules lanceolate or ovate, distinct, green, attenuate; 

 leaflets 15-31, oblong or elliptic, 1-2.5 cm. long, 3-10 mm. wide, glabrous above, villous 

 beneath, obtuse, rounded, or slightly retuse at the apex; peduncles 5-15 cm. long; racemes at 

 first rather dense, elongate in fruit, 5-10 cm. long; bracts lanceolate, 2-3 mm. long; flowers 

 nodding; pedicels 2-4 mm. long; calyx black-villous, the tube 5 mm. long, 3 mm. broad, gibbous 

 on the upper side at the base, the teeth subulate, 2 mm. long; corolla white or cream-colored, 

 about 2 cm. long; banner oblanceolate, deeply notched, moderately arched at the middle; 

 wings about 16 mm. long, the blade obliquely oblanceolate, nearly straight, equaling the claw, 

 with a large reflexed auricle; keel-petals about 14 mm. long, the blades obliquely obovate, 

 strongly arched towards the blunt apex, with a rounded basal auricle; pod drooping, glabrous, 

 stipitate, the stipe nearly 1 cm. long, the body linear, 2-4 cm. long, 4 mm. wide and thick, 

 tapering at the base, abruptly short-beaked at the apex, the upper suture acute, the lower 

 deeply sulcate, the cross-section cordate, the septum fully 1 mm. wide; seeds brown, obliquely 

 reniform, 3 mm. long. 



Type locality: Eagle and Red-Deer Hills of the Saskatchewan. 



Distribution: Plains from Saskatchewan and Alberta to northern New Mexico and Utah. 

 Illustrations: Hook. Fl. Bor. Am. pi. 57; M. E. Jones, Rev. Astrag. pi. 64, f. 210; Fl. Neb. 

 22 pi 9 f 16-21; Britt. & Brown, HI. Fl. /. 2133; ed. 2. /. 2541; Clements, Rocky Mt. Fl. pi. 29, 



f. 15. 



2. Tium brevisetum (M. E. Jones) Rydberg, sp. now 



Astragalus racemosus brevisetus M. E. Jones, Proc. Calif. Acad. II. 5: 662. 1895. 



A tall perennial; stem stout, 5 dm. high or more, striate, strigulose, flexuose above; leaves 

 ascending, 1-1.5 dm. long, the rachis strigose, sulcate; stipules broadly deltoid, 4 mm. long; 

 leaflets 31-41, oblong, 1-2.5 cm. long, thick, 3-5 mm. wide, glabrate above, rather densely 

 strigulose beneath, obtuse to slightly retuse at the base; peduncles 5-8 cm. long, erect, sulcate; 

 bracts subulate, 4-5 mm. long; pedicels 2 mm. long; calyx strigose, the tube oblique, gibbous 

 on the upper side, about 5 mm. long, the upper two teeth lance-subulate, 1.5 mm. long, the 

 lower three subulate, the lowest one 2 mm. long; corolla white, tinged and veined with purple, 

 about 18 mm. long; banner obovate, slightly notched; wings shorter, the blade falcate, oblance- 

 olate; keel-petals still shorter, the blade broadly lunate, rounded and purplish at the apex; 

 pod glabrous; stipe about 5 mm. long, the body linear, acute at each end, 2-2.5 cm. long, 



