438 NORTH AMERICAN FLORA [Volume 24 



I. Hedyphylla glyciphylla (X.) Rydberg. 



Astragalus glycyphyllus L. Sp. PI. 758. 1753. 



Astragalus lunatus Gilib. Fl. Lithuan. 110. 1781. 



Hedyphylla vulgaris Steven, Bull. Soc. Nat. Mosc. 29 2 : 142. 1856. 



A perennial; stem reclining, flexuose, 3-12 dm. long, angled; leaves 1-1.5 dm. long, 

 spreading; stipules lanceolate, foliaceous, acuminate, about 1 cm. long; leaflets 9-15, oval or 

 elliptic, rounded at both ends or retuse or mucronate at the apex, 2-4 cm. long, 1-1.5 cm. wide, 

 glabrous or nearly so, paler beneath; peduncle 2-8 cm. long; racemes dense, 2-5 cm. long; 

 bracts lanceolate, acuminate, 2 mm. long; pedicels 1 mm. long; calyx glabrous, the tube 3 mm. 

 long, oblique, the teeth subulate, unequal, 2-3 mm. long, the upper two the shortest; corolla 

 greenish-yellow, rarely bright-yellow, turning brownish; banner obovate, retuse, 10-12 mm. 

 long; wing-petals about as long, the blade oblanceolate, as long as the claw, with a large reflexed 

 auricle; keel-petals shorter, the blade broadly lunate, rounded at the apex, with a short and 

 broad auricle; pod linear, tapering at each end, short-stipitate, 3-5 cm. long, 5 mm. wide and 

 thick, glabrous, reticulate, sulcate on the lower suture, at length slightly falcate; seeds dark- 

 brown, reniform, 2.5 mm. long. 



Type locality: Europe. 



Distribution: Adventive around eastern seaports; native of Eurasia. 



Illustrations: Fl. Dan. pi. 1108; Engl. Bot. pi. 203; ed. 3. pi. 377; Sv. Bot. pi. 237; Schrank, 

 Fl. Monac. pi. 22; Reichenb. 1c. Fl. Germ. 22: pi. 153 [pi. 2204]; Fl. Deuts. ed. 5. pi. 2441; Thome, 

 Fl Deuts. pi. 441; ed. 2. pi. 369; Coste, Fl. Fr. /. 952. 



56. HESPERONIX Rydberg, gen. nov. 



Leafy-stemmed perennials. Leaves odd-pinnate, with many leaflets and distinct stipules. 

 Flowers in peduncled axillary racemes. Calyx-tube campanulate, the teeth subulate. Corolla 

 mostly white or ochroleucous. Banner obovate, subsessile, mostly retuse. Wings clawed, 

 the blades obliquely oblanceolate with a basal auricle. Keel-petals with shorter and broader, 

 lunate blades. Stamens diadelphous (9 and 1), the sheath straight, the free portion of the 

 filaments curved upward. Ovary stipitate, many-ovuled, the style glabrous, curved upwards, 

 the stigma minute, terminal. Pod leathery or coriaceous, inflated, stipitate, completely 

 2-celled, the septum formed by the lower suture extending to the upper. Seeds obliquely 

 reniform. 



Type species, Astragalus Bolanderi A. Gray. 



Stipe and body of the pod straight or nearly so. 



Pubescence villous; pod somewhat fleshy or coriaceous. 



Pod pubescent, its body 1.5 cm. long or less; leaflets glabrous above. 1. H. accidens. 



Pod glabrous, its body 1.8 cm. long; leaflets villous on both sides. 2. H. Walsoni. 



Pubescence strigose. the leaflets glabrous above; pod not fleshy, leathery. 

 Body of fruit 3—4 cm. long; leaflets pubescent only on the ribs and around 



the margins. 3. H. vallaris. 



Body of fruit 2-2.5 cm. long; leaflets strigose throughout beneath. 4. H. scaphoides. 



Stipe and body of the pod distinctly curved. 5. H. Bolanderi. 



1. Hesperonix accidens (S. Wats.) Rydberg. 



Astragalus accidens S. Wats. Proc. Am. Acad. 22: 471. 1887. 



A perennial; stems 3-5 dm. high, striate, sparingly villous; leaves ascending, 8-10 cm. long, 

 the rachis sparingly villous; stipules lanceolate, free, 4-5 mm. long; leaflets 21-33, oblong or 

 elliptic, 8-20 mm. long, cuneate at the base, truncate or retuse at the apex, glabrous above, 

 pilose beneath ; peduncles about 1 dm. long; racemes 2-5 cm. long; bracts subulate, 3 mm. long; 

 pedicels 1 mm. long; flowers reflexed; calyx black-hairy, the tube 4 mm. long, 3 mm. broad, the 

 teeth lance-subulate, 1.5 mm. long; corolla white or cream-colored, 1 5—1 S mm. long; banner 

 narrowly ovate, moderately arched at the middle; wings oblong-falcate, obtuse, the blade 

 nearly twice as long as the claw, with a large reflexed auricle; keel-petals about 10 mm. long, 

 the blade broadly lunate, with a large auricle; pod strigose, stipitate, coriaceous, the stipe 

 about 6 mm. long, straight, the body oval-obovoid, abruptly contracted at each end, reticulate, 

 15 mm. long, 6 mm. wide and thick, terete, the sutures somewhat prominent. 



Type locality: Southern Oregon. 



Distribution: Oregon. 



Illustrations: M. E. Jones, Rev. Astrag. pi. 39, f. 125, pi. 76. 



