402 NORTH AMERICAN FLORA [Volume 24 



Pod broadly ellipsoid, 1 cm. or more in diameter. 



Calyx-lobes lance-subulate or subulate. 3 mm. long or more. 



Calyx with scattered black short hairs; pod puberulent when 



young. 5. J. rccedens. 



Calyx with white hairs; pod glabrous. 



Pod ellipsoid, 2.5-3 cm. long. 6. J . Mearnsii. 



Pod rounded ellipsoid, about 2 cm. long. 7. J. Rothrockii. 



Calyx-lobes deltoid, 2 mm. long or less. 8. J. praelonga. 



Leaflets single. 9. J. asclepiadoides. 



I . Jonesiella sabulosa (M. E. Jones) Rydberg. 



Astragalus sabulosus M. E. Jones, Zoe 2: 239. 1891. 



A cespitose perennial, with a woody rootstock; stems several, 1-3 dm. long, ascending 

 or decumbent, stout, puberulent or strigose; leaves 5-10 cm. long, the rachis densely strigose; 

 stipules deltoid, green, 5-10 mm. long, recurved; leaflets 3-9, elliptic or oblanceolate, or the 

 terminal one rhombic, 1-3 cm. long, acute at each end, ashy-strigose with flat lanceolate hairs; 

 peduncles 2-5 cm. long; racemes 4— 8-flowered; bracts lanceolate, 3-4 mm. long; pedicels 2-3 

 mm. long; calyx black-strigose, the tube oblique, about 1 cm. long, the teeth deltoid, about 2 

 mm. long; corolla white, nearly 2 cm. long; banner elliptic-obovate, abruptly arched; wings 

 much shorter; keel-petals a little shorter, nearly straight, with a triangular obtuse purple tip; 

 pod oblong, short-stipitate, 3-3.5 cm. long, fully 1 cm. wide, cross-reticulate, ashy-strigose, 

 scarcely sulcate, the dorsal suture with a very narrow hyaline partial septum. 



Type locality: Cisco, Utah. 

 Distribution: Eastern Utah. 

 Illustrations: M. E. Jones, Rev. Astrag. pi. 36, f. 118; pi. 75. 



2. Jonesiella Pattersoni (A. Gray) Rydberg. 



Astragalus Pattersoni Brand.; A. Gray, Bull. U. S. Geol. Surv. Terr. 2: 235. 1876. 

 Tragacantha Pattersoni Kuntze, Rev. Gen. 947. 1891. 

 Phacopsis Pattersoni Rvdb. Bull. Torrev Club 32: 661. 1906. 

 Rydbergiella Pattersoni Fedde & Sydow, Bot. Jahresb. 33': 534. 1906. 



A perennial, with a woody root; stems several, striate, often streaked with purple, strigulose 

 when young, in age glabrate; leaves 8-12 cm. long, the rachis strigulose when young; stipules 

 deltoid, spreading, 4 mm. long; leaflets 13-19, oblong or elliptic, rounded at the tip, cuneate 

 at the base, 1-2.5 cm. long, 3-7 mm. wide, glabrous above, strigose beneath, at least when 

 young; peduncles 5-10 cm. long, erect; racemes 4-8 cm. long, rather lax, 8-15-flowered; bracts 

 subulate, 5-7 mm. long; calyx finely strigose, the tube 8 mm. long and 4 mm. broad, the teeth 

 subulate, 3 mm. long, in age spreading or recurved; corolla white, 15-18 mm. long; banner 

 obovate, moderately arcuate; wings shorter, the blade oblanceolate, with a large auricle, about 

 equaling the claw; keel-petals shorter, the blade broadly lunate, shorter than the claw; pod 

 obliquely lance-ellipsoid, 2-2.5 cm. long, tapering gradually at the apex, more abruptly at the 

 base, cross-reticulate, with strong sutures, the upper nearly straight, the septum a mere 

 vestige. 



Type locality: Gore Mountains, Middle Park, Colorado. 



Distribution: Colorado. 



Illustration: M. E. Jones, Rev. Astrag. pi. 35, f. 117. 



3. Jonesiella arcta (Sheldon) Rydberg. 



Astragalus Preussii lalus M. E. Jones, Zoe 4: 36. 1893. 

 Astragalus Preussii arctus Sheldon, Minn. Bot. Stud. I: 130. 1894. 

 Rydbergiella arcta Rydb. Fl. Rocky Mts. 501, 1063. 1917. 



A perennial, with a woody root; stems several, 3-5 dm. high, branched, striate or sulcate, 

 glabrous; leaves ascending, 5-15 cm. long, the rachis glabrous; stipules deltoid, 4 mm. long; 

 leaflets 15-25, elliptic, oblong, or oblanceolate, 8-20 mm. long, 3-5 mm. wide, glabrous; pedun- 

 cles 8-15 cm. long, erect; racemes 2-4 cm. long; bracts lanceolate, 2-3 mm. long; pedicels 

 2-4 mm. long; calyx sparingly strigose, the tube 5 mm. long, the teeth subulate, 2-3 mm. 

 long; corolla white, similar to that of /. Pattersoni; pod distinctly stipitate, the stipe 5-6 



