390 NORTH AMERICAN FLORA [Volume 24 



1 1 . Tium Nevinii (A. Gray) Rydberg. 



Astragalus Nevinii A. Gray, Proc. Am. Acad. 21: 412. 1886. 



A perennial, with a taproot; stems ascending or decumbent, white-tomentulose, 2-4 cm. 

 high; leaves numerous, crowded, 4-10 cm. long, the rachis tomentulose; stipules lance-subulate, 

 3-5 mm. long; leaflets 1 1-21, obovate, 5-10 mm. long, white- villous on both sides, cuneate at 

 the base, rounded to retuse at the apex; peduncles 5-10 cm. long; racemes 2-4 cm. long; 

 bracts lanceolate, 2-3 mm. long; pedicels very short; calyx villous with dark-brown hairs, the 

 tube 3 mm. long, 2 mm. broad, the teeth subulate, 1.5 mm. long; corolla yellowish, 8-10 mm. 

 long; banner obovate, strongly arched at the middle; wings shorter, the blade oblong, falcate; 

 keel-petals still shorter, the blade broadly lunate; pod glabrous, stipitate, the stipe 7 mm. 

 long, the body lance-linear, tapering at each end, strongly cross-reticulate, falcate, about 1.5 

 cm. long, 4 mm. wide, and 3 mm. thick, acute on the upper suture, deeply sulcate on the lower, 

 the cross-section cordate, the septum 1 mm. wide, nearly reaching the upper suture. 



Type locality: Island of San Clemente, California. 



Distribution: San Clemente and Santa Barbara islands, off California. 



Illustration: M. E. Jones, Rev. Astrag. pi. 67, f. 231. 



12. Tium Traskiae (Eastw.) Rydberg. 



Astragalus Traskiae Eastw. Proc. Calif. Acad. III. 1: 102. 1898. 



A perennial; stem decumbent and woody at the base, 2-4 dm. high, densely white-tomen- 

 tose; leaves numerous, ascending, 5-9 cm. long; the rachis white-tomentose ; stipules deltoid, 

 acuminate, 3 mm. long; leaflets 17-25, elliptic to broadly oval, 5-12 mm. long, thick, white- 

 tomentose on both sides; peduncles 5-10 cm. long, white-tomentose; racemes 3-7 cm. long; 

 bracts lance-subulate, 3 mm. long; pedicels 2 mm. long; calyx yellowish-brown, tomentose, 

 the tube 5 mm. long, the teeth lanceolate, about 1 mm. long; corolla ochroleucous; banner 

 obovate, about 15 mm. long; wings 12 mm. long, the blade broadly oblanceolate, with a large 

 reflexed auricle, longer than the claw; keel-petals shorter, the blade broadly lunate, obtuse at 

 the apex ; pod white-tomentose, reticulate, the stipe 6-7 mm. long, the body semioval in outline, 

 about 1.5 cm. long, 4 mm. high, 6 mm. broad, abruptly acute at each end, the upper suture 

 straight or nearly so, the lower strongly arched, deeply sulcate, the cross-section inverted 

 V-shaped, the sulcus extending nearly halfway to and the septum nearly to the upper suture. 



Type locality: San Nicholas Island, California. 



Distribution: Islands of San Nicholas and Santa Barbara, off California. 



Illustrations: Proc. Calif. Acad. III. 1: pi. 8, f. 6; M. E. Jones, Rev. Astrag. pi. 67, f. 232. 



3. Arrecta. Pod leathery, stipitate or sessile, erect or ascending, the body linear-oblong, 

 straight or slightly curved, terete in cross-section, slightly sulcate on the lower suture. Stout, 

 usually low plants, with rather large white or ochroleucous flowers. 



13. Tium eremiticum (Sheldon) Rydb. Bull. Torrey Club 

 40:49. 1913. 



Astragalus eremilicus Sheldon, Minn. Bot. Stud. 1: 161. 1894. 



Astragalus arrectus eremilicus M. E. Jones, Proc. Calif. Acad. II. 5: 665. 1895. 



Astragalus eremilicus spencianus M. E. Jones, Contr. W. Bot. 10: 60. 1902. 



Astragalus boiseanus A. Nelson, Bot. Gaz. 53: 223. 1912. 



Cystium boiseanum Rydb. Bull. Torrey Club 40: 50. 1913. 



Astragalus arrectus Kelseyi M. E. Jones, Rev. Astrag. 161, in part. 1923. 



A cespitose perennial, with a woody root; stems several, 3-5 dm. high, sulcate, usually 

 straw-colored or purplish, glabrous or nearly so; leaves 7-10 cm. long, ascending; stipules 

 deltoid, 4-6 mm. long; leaflets 21-35, oblong to oval, 8-18 mm. long, 3-8 mm. wide, glabrous 

 above, sparingly strigose beneath; peduncles 5-15 dm. long; racemes 5-10 cm. long, rather lax; 

 bracts lanceolate, 2 mm. long; pedicels 1-2 mm. long; calyx sparingly black-hairy, the tube 

 5 mm. long, the teeth subulate, scarcely 2 mm. long; corolla white, ochroleucous, or purple, 

 about 15 mm. long; banner obovate, notched at the apex; wings about 12 mm. long, the blade 

 oblanceolate; keel-petals 10 mm. long, the blade broadly lunate, rounded at the apex; pod 



