Part 7, 1929] FABACEAE: GALEGEAE 443 



a large basal auricle; keel-petals rather narrow, oblong-lunate, only slightly arcuate towards 

 the apex, obtuse; ovary glabrous; pod unknown. 



Type collected near San Diego Ranch, Chihuahua, Harlman 67 S (herb. N. Y. Bot. Gard.). 



Distribution: Known only from the type locality. 



Illustration: M. E. Jones, Rev. Astrag. pi. 59 (as var. yaquianus). 



3. Astragalus mollissimus Torr. Ann. Lye. N. Y. 2: 17S. 1827. 



Phaca villosa James. Trans. Am. Phil. Soc. II 2: 186. 1825. Not P. vilosa Nutt. 1818. 

 Tragacantha molUssima Kuntze. Rev. Gen. 946. 1891. 

 Astragalus simulans Cockerell, Torreya 2: 154. 1902. 



A cespitose perennial, much branched at the base; stems decumbent, usually less than 1 

 dm. long; leaves ascending, 1-2 dm. long; stipules herbaceous, lance-deltoid, about 5 mm. long; 

 leaflets 21—31, oval or obovate, acutish, obtuse or rounded at the apex, 1—2.5 cm. long, densely 

 silky with long, loosely appressed, yellowish or brownish hairs; peduncles 1-3 cm. long, stout; 

 racemes dense, 5-10 cm. long; bracts subulate, about 5 mm. long; calyx densely silky, the tube 

 7-10 mm. long, the teeth subulate, 3-4 mm. long; corolla purple, 1 S— 20 mm. long; banner 

 narrowly obovate, moderately arcuate, with the margins reflexed; wings shorter, the blade 

 linear-oblong, falcate, with a large basal auricle; keel-petals 12-15 mm. long, the blade lunate, 

 obtuse, with a large basal auricle; pod glabrous, lance-oblong, acuminate, 15-20 mm. long, 

 5 mm. thick and 3 mm. wide, decidedly arcuate, slightly sulcate on both sutures. 



Type locality: On the Platte [Nebraska or Colorado]. 

 Distribution: Nebraska and Wvoming to Texas and New Mexico. 



Illustrations: M. E. Jones. Rev. Astrag. pi. 59. f. 191; Britt. & Brown, 111. Fl. /. 2129; ed. 2. 

 /. 2534; Fl. Neb. 21: pi. 9. f. 37-41. 



4. Astragalus orthanthus A. Gray, Proc. Am. Acad. 6: 195. 1S64. 



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



A perennial; stem short, 1-3 dm. long, short-woolly, almost velutinous; stipules herba- 

 ceous, deltoid, acuminate, 6-8 mm. long; leaves about 2 dm. long, ascending; leaflets 25-35, 

 oval, 1-2 cm. long, densely silky on both sides with yellowish or brownish, loosely appressed 

 hairs; peduncles about 2 dm. long; racemes dense, about 5 cm. long; bracts lanceolate, 4—5 

 mm. long; calyx densely silky, the tube about 1 cm. long, 3 mm. broad, the teeth subulate, 

 4—5 mm. long; corolla purplish-red or rose-colored, rarely white, 3-3.5 cm. long; banner nar- 

 rowly obovate, straight; wings shorter, the blade oblong-lanceolate, with a large basal auricle; 

 keel-petals 2.5-3 cm. long, the blade slightly lunate, acute, with a rounded, reflexed auricle; 

 pod ovoid-ellipsoid, 2.5-3 cm. long, 1.5-2 cm. thick, densely velutinous, at least when young, 

 sulcate on both sutures. 



Type locality: Perote, Veracruz. 

 Distribution : Veracruz to Nuevo Leon. 



5. Astragalus sanguineus Rydberg, sp. now 



A perennial; stem 3-5 dm. high or more, sulcate, strigulose; leaves ascending, 8-15 cm. 

 long, the rachis strigulose; stipules lanceolate, green, strigose, 6-9 mm. long; leaflets 17-29, 

 oblong or elliptic, obtuse or rounded at the apex, 5-10 mm. long, glabrous above, strigulose 

 beneath; peduncles 10— IS cm. long, strigulose; racemes 5-7 cm. long, 10-15-flowered; bracts 

 lance-subulate, scarious, 5-6 mm. long; calyx strigulose, the tube 9-10 mm. long, the teeth 

 subulate, 3-4 mm. long; corolla purplish, red, or dark-rose, fully 2.5 cm. long; banner nearly 

 straight, narrowly ovate; wings about 3 mm. shorter, the blade oblong-lanceolate; keel- 

 petals about as long, the blade lunate but only slightly arched; pod broadly round-ellipsoid, 

 strigose, 3-4 cm. long, 2-2.5 cm. wide. 



Type collected near Saltillo, Nuevo Le6n, in 1880, E. Palmer 243 (U. S. Nat. Herb. 43559). 



Distribution: Known only from the type locality. 



Illustration: M. E. Jones, Rev. Astrag. pi. 60, f. 195 (as A. orthanthus). 



