Mat Milkvetch

Kentrophyta rotunda (M. E. Jones) Rydb. Bull. Torrey Club 51:23. 1924.
Astragalus tegelarius rotundus M. E. Jones, Proc. Calif. Acad. II. 5: 650. 1895. Astragalus Kentrophyta rotundus M. E. Jones, Contr. W. Bot. 10: 63. 1902. Astragalus montanus rotundus M. E. Jones, Rev. Astrag. SO. 1923.
A perennial, with a cespitose caudex; stems intricately branched, 1-2 dm. long, strigose; stipules scarious, connate, deltoid, acuminate, strigose throughout; leaves about 1 cm. long, spreading; leaflets 5, linear-lanceolate, narrowed at each end, with short spinulose tips, strigosecanescent beneath, mostly glabrate above, 5-8 mm. long, 1-1.5 mm. wide; peduncles very short; calyx strigose, the tube 2 mm. long, the lobes subulate-filiform, 1.5 mm. long; corolla 5-6 mm. long, apparently pinkish; pod lance-ovate, strigose, 6 mm. long, 2.5 mm. thick, rather turgid, the beak recurved.
Type locality: Loa and Panguitch Lake, Utah.
Distribution: South and central Utah.

Kentrophyta minima Rydb. Bull. Torrey Club 34: 420. 1907
A perennial, with a densely cespitose caudex; stems intricately branched, 1-10 cm. long; stipules scarious, deltoid, 1-3 mm. long, sparingly canescent; leaves 5-8 mm. long; leaflets 5-7, linear-lanceolate, conduplicate, canescent with ascending hairs, 3-5 mm. long, with short spinulose tips; flowers usually solitary; calyx strigose, the tube 1-1.5 mm. long, the lobes subulate, 1 mm. long; corolla ochroleucous with purple-tipped keel, 3 mm. long; pod ovoid, rather turgid, 3 mm. long, strigose.
Type locality: Yellowstone National Park. Distribution: Northwestern Wyoming.

Kentrophyta aculeata (A. Nelson) Rydb. Bull. Torrey Club 32:665. 1906.
Kentrophyta montana Nutt.; T. & G. Fl. N. Am. 1: 353. 1838. Astragalus aculeatus A. Nelson. Bull. Torrey Club 26: 10. 1899. Homalobus aculeatus Rydb. Mem. N. Y. Bot. Gard. 1: 249. 1900. Kentrophyta montana Jepson, Man. Fl. PI. Calif. 583, mainly. 1925.
A perennial, with a cespitose, tufted caudex; stems numerous, decumbent, intricately branched, 0.5-3 dm. long, hirsutulous-canescent with ascending hairs; stipules scarious, hirsute along the margins, deltoid, acuminate or often long-attenuate and somewhat pungent, 4-6 mm. long; leaves 1-1.5 cm. long, spreading; leaflets 5-7, linear-lanceolate, narrowed at each end, hirsutulous on both sides, green, 5-8 mm. long, 1-1.5 mm. wide, spinulose-tipped; peduncles 2-10 mm. long or less, 1-3-flowered; calyx hirsutulous, the tube 2.5 mm. long, the lobes subulate-filiform, 2 mm. long; corolla purple, 5-7 mm. long; pod ovoid, 5 mm. long, 2.5 mm. wide, hirsutulous, compressed; seeds 2.5 mm. long, obliquely reniform.
Type locality: Big Horn Mountains, near Dome Lake, Wyoming. Distribution: Montana to Colorado, northern Utah, and California.

Kentrophyta tegetaria (S. Wats.) Rydb. Bull. Torrey Club 34:421. 1907.
Astragalus tegelarius S. Wats. Bot. King's Expl. 76. 1871. Tragacanlha tegetaria Kuntze, Rev. Gen. 948. 1891. Homalobus tegelarius Rydb. Bull. Torrey Club 31: 563. 1904. Astragalus montanus tegelarius M. E. Jones, Rev. Astrag. 81. 1923.
A perennial, with a densely cespitose caudex; stems 0.5-1.5 dm. long, slender, strigose, prostrate; stipules scarious, acuminate, deltoid, connate, with scattered hairs; leaves 1-2 cm. long; leaflets 5-9, linear-lanceolate, conduplicate, 3-5 mm. long, less than 0.5 mm. wide, hirsutulous with ascending or spreading hairs, with short spinulose tips; peduncles 1-3 cm. long, 1-3-flowered; calyx strigose, the tube 1.5 mm. long, the lobes subulate-filiform, 1.5 mm. long; corolla about 5 mm. long, ochroleucous with purpletipped keel; pod ovate-oblong, about 5 mm. long, compressed.
Type locality: Peaks of East Humboldt Mountains, Nevada. Distribution: Mountains of eastern Nevada.

Kentrophyta wolfii Rydb. Bull. Torrey Club 32: 665. 1906
Astragalus tegelarius implexus Canbv; Porter & Coult. Svn. Fl. Colo. Add. 1874. Homalobus Wolfii Rydb. Bull. Torrey Club 31: 562. 1904.
A perennial, with a densely cespitose caudex; stems intricately branched, less than 1 dm. long; stipules scarious, broadly ovate-deltoid, strongly veined, hirsute-canescent, acuminate, 3 mm. long; leaves 5-6 mm. long; leaflets 5, approximate, lanceolate or linear-lanceolate, grayish-hirsute, 3-4 mm. long, with short spinulose tips, strongly conduplicate; peduncles very short, 1or 2-flowered; calyx canescent-hirsute, the tube scarcely 2 mm. long, the lobes about 1 mm. long, subulate; corolla ochroleucous with purple-tipped keel, about 4 mm. long; pod unknown.
Type locality: South Park, Colorado. Distribution : Mountains of Colorado.