Part 7, 1929] FABACEAE: GALEGEAE 411 



16. Cystium salinum (Howell) Rydb. Fl. Rocky Mts. 492, 

 1063. 1917. 



Astragalus saiinus Howell, Erythea 1: 111. 1893. 



Astragalus lentiginosus chartaceus M. E. Jones, Proc. Calif. Acad. II. S: 673. 1895. 



Phaca inepla Rvdb. Mem. N. Y. Bot. Card. 1 : 246. 1900. 



Cystium ineptum Rvdb. Bull. Torrev Club 32: 659. mainly. 1906. 



Astragalus ineptus Coult. & Nels. Man. 285, mainly. 1909. Not A. ineplus A. Gray. 1865. 



Cystium heliophilum Rydb. Fl. Rocky Mts. 491, 1063. 1917. 



A perennial, with a cespitose caudex; stems decumbent at the base, 2-4 dm. high, glabrate 

 or sparingly strigose, often tinged with red; leaves ascending, 6-10 cm. long; stipules deltoid, 

 3.5 cm. long; leaflets 9-15, obovate, 7-10 mm. long, rounded to retuse at the apex, glabrous 

 above, sparingly strigose beneath; peduncles 2-4 cm. long; racemes dense, 3-5 cm. long; bracts 

 lanceolate, 2-3 mm. long; pedicels 1 mm. long; calyx strigose, the tube 3.5-4 mm. long, the 

 teeth about 2 mm. long; corolla ochroleucous, about 1 cm. long; banner obovate, slightly up- 

 curved; wings slightly shorter, the blade oblong, with a large basal auricle; keel-petals much 

 broader and shorter, obtuse, falcate; pod broadly ovoid, glabrous, nearly 2 cm. long, 1 cm. 

 thick, short-acuminate, with upturned apex. 



Type locality: Southeastern [Harney County] Oregon. 



Distribution: Oregon and Montana to Utah. 



Illustration: M. E. Jones, Rev. Astrag. pi. 24, f. aa (as var. diphysus). 



17. Cystium floribundum (A. Gray) Rydberg, sp. nov. 



Astragalus lentiginosus floribundus A. Gray, Proc. Am. Acad. 6: 524. 1865. 



A densely cespitose perennial, with a woody caudex; stems decumbent, 2-5 dm. long, 

 glabrous, straw-colored; leaves short, 5-7 cm. long, spreading; stipules deltoid, scarious, 3 

 mm. long; leaflets 13-19, rather thick, obovate to oblong, 8-12 mm. long, rounded to retuse 

 at the apex, glabrous, or sparingly strigose on the midrib beneath; peduncles 1-3 cm. long; 

 racemes short, densely flowered; bracts lanceolate, 3 mm. long; calyx white-strigose, the tube 

 3-3.5 mm. long, the teeth subulate, 1 mm. long; corolla white or ochroleucous; pod papery, 

 glabrous, ovoid, acuminate, nearly straight, about 2 cm. long and 1 cm. thick. 



Type locality: Carson City, Nevada. 



Distribution: Eastern California and western Nevada. 



Illustration: M. E. Jones, Rev. Astrag. pi. 23, f. c (as var. ineptus). 



IS. Cystium scorpionis (M. E. Jones) Rydberg, sp. nov. 



Astragalus lentiginosus scorpionis M. E. Jones, Rev. Astrag. 124. 1923. 



A perennial; stem decumbent, slender, much branched, about 2 dm. long, sparingly 

 strigose; leaves ascending, 5-10 cm. long; stipules deltoid, 3-4 mm. long, rather densely 

 strigose; leaflets 15-19, elliptic or obovate, 5-10 mm. long, glabrous above, sparingly strigose 

 beneath, obtuse; peduncles 4-6 cm. long; racemes elongate, 4-6 cm. long; bracts lanceolate, 

 2-3 mm. long; calyx white-hairy, the tube 3 mm. long, the teeth subulate, 1.5 mm. long; 

 corolla white, about 8 mm. long, the banner and wings rather narrow, otherwise as in C. len- 

 tiginosum; pod glabrous, ovate, 1-1.2 cm. long, slightly mottled, the tip acuminate and strongly- 

 incurved. 



Type locality: Morey Peak, Nevada. 

 Distribution: Known only from the type locality. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 24. 



19. Cystium griseolum Rydberg, sp. nov. 



A cespitose perennial, with a woody caudex; stems ascending, 1-2 dm. high, strigose with 

 kinky hairs, striate; leaves ascending, 3-5 cm. long; stipules deltoid, 4 mm. long, erect; leaflets 

 11-15, obovate, 5-7 mm. long, rounded to retuse at the apex, pubescent on both sides with 

 kinky hairs; peduncles 1-4 cm. long; bracts lanceolate, 2 mm. long; calyx hirsutubous, the 

 tube 3 mm. long, the teeth subulate, 1 mm. long; corolla white, tinged with rose, about 8 mm. 

 long; banner obovate, bent at an angle of about 80°; wings shorter, the blade obliquely ovate, 

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