462 NORTH AMERICAN FLORA [Volume 24 



5. Geoprumnon pachycarpum (T. & G.) Rydb.; Small, Fl. SE. 

 U. S. 616, 1332. 1903. 



Astragalus pachycarpus T. & G. Fl. N. Am. 1: 3.12. 1838. 



Astragalus crassicarpus pachycarpus M. E. Jones, Contr. W. Bot. 8: 16. 1898. 



A perennial, with a creeping rootstock; stems decumbent at the base, 1.5-3 chr. high, 

 strigose; leaves 5-10 cm. long, spreading; stipules lance-deltoid, 5 mm. long; leaflet 15-23, 

 lanceolate, acute, 5-10 mm. long, 1-3 mm. wide, strigose beneath, glabrate above; { duncles 

 3-5 cm. long; racemes 2-3 cm. long; bracts lanceolate, 2-3 mm. long; calyx strigose, le tube 

 5 mm. long, the teeth subulate, 2 mm. long; corolla pale, apparently ochroleucous, the keel 

 tipped with purple; banner obovate, about 15 mm. long; wings much shorter, the blade lance- 

 elliptic, acutish, with a large basal auricle; keel-petals shorter, the blade broadly lunate, rounded 

 at the apex; pod ovoid-dlipsoid, IS— 22 mm. long, 8-10 mm. wide, and 10-12 mm. thick. 



Type locality: Prairies of Arkansas. 



Illustration: M. E. Jones, Rev. Astrag. pi. 61, f. 19S (in part, as to the glabrous fruit). 



6. Geoprumnon plattense (Nutt.) Rydb.; Small, Fl. SE. 

 U.S. 616, 1332. 1903. 



Astragalus caryocarpus Torr. Ann. Lye. N. Y. 2: 179. 1827. Not .4. carvocarpus Ker, 1816. 



Astragalus platlensis Nutt.; T. & G., Fl. N. Am. 1: 332. 1838. 



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



Phaca plattensis MacMill. Metasp. Minn. Valley 325, as synonym. 1892. 



A perennial, with a cespitose rootstock; stems slender, decumbent or ascending, -3 dm. 

 long, hirsute; leaves 5-10 cm. long; stipules lanceolate or deltoid, acuminate, 3-5 mm. long; 

 leaflets 15-25, elliptic, oblong or obovate, 4-15 mm. long, 3-5 mm. wide, glabrate above, 

 pilose beneath; peduncles 3-5 cm. long; racemes dense, 1.5-2 cm. long; bracts lance-subulate, 

 3-5 mm. long; pedicels very short; calyx hirsute-pilose with ascending hairs, the tube 6-7 

 mm- long, the teeth lance-subulate, 2 mm. long; corolla purplish, 14-16 mm. long; banner 

 narrowly obovate, retuse at the apex, moderately arched at the middle; wings shorter, t' e blade 

 obliquely oblanceolate, with a large basal auricle; keel-petals shorter, the blade broadlj lunate, 

 rounded and much darker at the apex; pod pubescent, obliquely ovoid, abruptly acuminate, 

 1.5-2 cm. long, 1-1.5 cm. thick, 7-8 mm. wide, slightly sulcate on each suture. 



Type locality: Plains of the Platte, Nebraska. 



Distribution: Prairies and plains from Indiana (?) to Minnesota, Black Hills of South Dakota, 

 Texas, and Alabama. 



Illustrations: M. E. Jones, Rev. Astrag. pi. 61, f. 19S (except the glabrous fruit); />. . 62; Fl. 

 Neb. 21: pi. 10; f. 55-57; Britt. & Brown, 111. Fl./. 2127; ed. 2./. 2.5.;.'. 



7. Geoprumnon tennesseense (A. Gray) Rydb.; Small, Fl. SE. 

 U. S. 615, 1332. 1903.' 



Astragalus tennesseense A. Gray; Chapm. Fl. S. U. S. 98. 1860. 

 Astragalus plattensis tennesseensis A. Gray, Proc. Am. Acad. 6: 193. 1864. 



A perennial, with a cespitose rootstock ; stems decumbent at the base, long-pilose ; leaves 

 ascending, 5-12 cm. long; stipules deltoid, acuminate, 7-10 mm. long, membranous and 

 yellowish; leaflets 15-25, oblong to elliptic, 8-20 cm. long, glabrate above, pilose beneath, 

 rounded at the apex; peduncles 5-10 cm. long; racemes dense, 2-3 cm. long; bracts lanceolate, 

 acuminate, membranous, 4-5 mm. long; pedicels 1-1.5 mm. long; calyx villous-pilose, the tube 

 7 mm. long, 3 mm. broad, the teeth subulate, 2 mm. long; corolla ochroleucous, 15-17 mm. 

 long; banner narrowly obovate, retuse, slightly arched; wings shorter, the blade oblong, with 

 a large basal auricle; keel-petals still shorter, the blade obliquely and broadly lunate, rounded 

 at the apex; pod obliquely oblong-ovoid, pubescent in age, reticulate, 2-5-3 cm. long, fully 

 10-15 mm. thick and 8-10 mm. wide, slightly sulcate on each suture. 



Type locality: Nashville, Tennessee. 

 Distribution: Illinois to Tennessee and Alabama. 



Illustrations: M. E. Jones, Rev. Astrag. pi. 62, f. 199; Britt. & Brown, 111. Fl. /. 2128; ed. 2. 

 /. 2533. 



