Part 6, 1929] FABACEAE: GALEGEAE 339 



15. Phaca jucunda Jcpson & Rydberg, sp. nov. 



Perennial, with a cespitose caudex; stems decumbent at the base, glabrous, 2—4 dm. high, 

 striate; leaves ascending, 10-15 cm. long, the rachis glabrous; stipules broadly deltoid, 5-8 mm. 

 long; leaflets 11-19, broadly oval or obovate, mostly retuse at the apex, glabrous on both sides, 

 5-20 mm. long, 4-10 mm. wide; peduncles 7-15 cm. long, glabrous; racemes 3-7 cm. long; 

 bracts subulate, 3 mm. long, nearly equaling the pedicels; calyx glabrous, the tube campanulate, 

 5 mm. long, the lobes lance-subulate, 4 mm. long; corolla purple, at least the banner; banner 

 obovate, 15-18 mm. long, moderately arcuate; wings 13-15 mm. long, the blade oblanceolate, 

 fully as long as the claw, rounded at the apex, with a large reflexed auricle; keel-petals 12-13 

 mm. long, the blade broadly lunate, rounded at the apex; pod ellipsoid, more or less mottled, 

 about 4 cm. long and 2 cm. wide, acutish at each end, the stipe a little exceeding the calyx- 

 tube. 



Type collected on Telescope Peak, Panamint Mountains, California, 1917, W. L. Jcpson. 

 Distribution: Eastern California and western Nevada. 



16. Phaca artipes (A. Gray) Rydb. Bull. Torrey Club 32: 664. 

 1906. 



Astragalus)- artipes A. Gray, Proc. Am. Acad. 13: 370. 1878. 



Astragalus megacarpus cau'lescens M. E. Jones, Proc. Calif. Acad. II. 5: 643. 1895. 



Perennial, with a cespitose caudex; stems many, branched, decumbent or ascending, 

 glabrous, 1-3 dm. high; leaves ascending, 7-15 cm. long; stipules broadly deltoid, acuminate, 

 about 5 mm. long; leaflets 13-21, obovate, retuse to rounded at the apex, 1-1.5 cm. long, 

 4—10 mm. wide, glabrous; peduncles 5-15 cm. long; racemes short, 5- 1 0-flowered ; bracts lance- 

 olate, 4—5 mm. long, deciduous; calyx-tube campanulate, glabrous, 4—5 mm. long, the lobes 

 subulate, 3-4 mm. long; corolla ochroleucous, about 13 mm. long; banner obovate, gradually 

 tapering below; wings somewhat shorter, the blade ovate-lunate, equaling the claw, with a large 

 rounded basal auricle; keel-petals similar, but broader, shorter, and more rounded at the apex; 

 pod glabrous, the stipe 5-8 mm. long, the body obliquely ovoid, with the tip somewhat curved 

 upwards, 3-3.5 cm. long, about 2 cm. wide, mottled; seeds obliquely reniform, 3 mm. long, 2 mm. 

 broad. 



Type locality: Mokiah Pass, Arizona. 



Distribution: Central Colorado to Idaho(?), Nevada, and Arizona. 



Illustration: M. E. Jones, Rev. Astrag. pi. 22. 



17. Phaca megacarpa Nutt.; T. & G. Fl. N. Am. 1: 343. 1838. 



Astragalus megacarpus A. Gray, Proc. Am. Acad. 6: 215. 1864. 

 Astragalus megacarpus Parryi A. Gray, Bot. Calif. 1: 148. 1876. 

 Tragacanlha megacarpa Kuntze, Rev. Gen. 946. 1891. 

 Astragalus megacarpus prodigus Sheldon, Minn. Bot. Stud. 1: 136. 1894. 



Perennial, with a cespitose caudex; stems mostly 1-7 cm. high, covered by numerous scale- 

 like, persistent stipules; leaves 7-12 cm. long, ascending; stipules scaiious, deltoid, 5 mm. long; 

 leaflets 7-21, broadly oval or obovate, 1-2 cm. long, 5-15 mm. wide, often retuse, glabrous and 

 somewhat glaucous; peduncles 2-5 cm. long; racemes 3-S-flowered; calyx-tube campanulate, 

 9-10 mm. long, the lobes lance-subulate, 5-6 mm. long; corolla ochroleucous, nearly 2 cm. long; 

 banner oblanceolate, gradually tapering below; wings shorter, the blade oblong-lunate, obtuse, 

 only slightly falcate, shorter than the claw; keel-petals about 15 mm. long, the blade broader, 

 rounded at the apex, a little more than half as long as the claw; pod glabrous, the stipe 3-5 mm. 

 long, the body ellipsoid, 4-6 cm. long, 2-2.5 cm. wide; seeds obliquely reniform. 



Type locality: Plains of the Rocky Mountains [Wyoming]. 

 Distribution: Wyoming to southwestern Utah. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 20, f. 75. 



6. Hookerianae. Low cespitose perennials, with decumbent stems and oblong canescent 

 leaflets. Calyx-lobes subulate, but short. Corolla ochroleucous, white, or purplish, with a 

 long banner, strongly arched at the middle. Pod papery, inflated obovoid, rounded at the 

 apex, acute at the base; cross-section orbicular. 



