Astragalus lentiginosus var. palans (M. E. Jones) M. E. Jones

Tium palans (M. E. Jones) Rydberg
Astragalus palans M. E. Jones, Zoe 4: 37. 1893.
Astragalus lentiginosus palans M. E. Jones, Rev. Astrag. 125. 1923.
A perennial, with a taproot; stem usually more than one from the base, glabrous or sparingly strigose, slightly sulcate, often tinged with purplish below, decumbent at the base; leaves ascending or spreading, about 1 dm. long; stipules deltoid, distinct, 5-7 mm. long; leaflets 15-21, oval, obovate, or elliptic, 1-1.5 cm. long, acutish at the base, rounded or retuse at the apex, glabrous on both sides; peduncles 5-8 cm. long, ascending or spreading; racemes few-flowered, 3-5 cm. long; bracts lanceolate or subulate, 3-5 mm. long; pedicels 2-3 mm. long, in fruit recurved ; calyx strigose with black hairs, the tube 5 mm. long, 3 mm. broad, the teeth subulate, 3 mm. long; corolla purple, about 2 cm. long; banner broadly obovate; wings shorter, obliquely and broadly oblanceolate ; keel-petals about as long, the blade broadly lunate, with a large basal auricle; pod oblong, arcuate, subterete, acute at each end, glabrous, blotched with purple, 2-3 cm. long, 5 mm. wide.
Type locality: Montezuma Canon, southeastern Utah.
Distribution: Southern Utah.

Tium ursinum (A. Gray) Rydberg
Astragalus ursinus A. Gray, Proc. Am. Acad. 13: 367. 1878.
A perennial; stems 3-4 dm. high, flexuose, slightly grooved, strigose; leaves 6-10 cm. long, spreading; stipules deltoid, 5 mm. long, distinct, herbaceous; leaflets 13-19, obovate, acute at the base, rounded to slightly retuse at the apex, 5-10 mm. long, glabrous on both sides or slightly strigose beneath, especially on the midrib; peduncles 4-6 cm. long; racemes lax, 4-6 cm. long; bracts lanceolate, 1.5-2 mm. long; calyx sparingly strigose, with black and white hairs mixed, the tube 4 mm. long, the teeth subulate, 1 mm. long; banner narrowly obovate, moderately arcuate; wings shorter, the blade oblong; keel-petals much shorter, the blade broadly lunate; pod ascending on an ascending pedicel, leathery, subterete, gradually acute, 1—1.5 cm. long, 4 mm. wide, glabrous.
Type locality: Bear Valley, Utah. Distribution: Known only from the type locality.

Tium amplexum (Payson) Rydberg
Astragalus amplexus Payson, Bot. Gaz. 60: 378. 1915. Hamosa amplexa Rydb. Fl. Rocky Mts. 496. 1917.
A perennial or biennial; stems several from the taproot, 3-4 dm. high, sparingly strigose, striate or somewhat sulcate, flexuose, more or less tinged with purple; leaves 8-12 cm. long, spreading; stipules deltoid, nearly distinct, 3-4 mm. long; leaflets 17-21, obovate or oblanceolate, rounded, truncate, or retuse at the apex, 9-12 mm. long, 4-6 mm. wide, glabrous above, sparingly strigose beneath; peduncles 4—5 cm. long; racemes 3-6 cm. long, 12-15-flowered; bracts lanceolate, 3 mm. long; pedicels in fruit reflexed; calyx strigose, more or less black', the tube 6 mm. long, 3 mm. broad, the teeth subulate, 2-3 mm. long; corolla paleviolet, 2 cm. long; banner obovate, slightly arcuate; wings nearly as long, the blade broadly oblong; keel-petals shorter, the blade broadly lunate; pod sessile, sparingly pubescent, coriaceous, 2-2.5 cm. long, 6 mm. wide, subterete, more or less arcuate, mottled with purple.
Type locality: Long Park, near Naturita, Colorado. Distribution: Known only from the type locality.