440 NORTH AMERICAN FLORA [Volume 24 



5. Hesperonix Bolanderi (A. Gray) Rydberg. 



Astragalus Bolanderi A. Gray, Proc. Am. Acad. 7: 337. 1868. 

 Tragacanlha Bolanderi Kuntze, Rev. Gen. 943. 1891. 

 Astragalus supervacaneus Greene, Erythea 1: 221. 1893. 



A perennial, with a woody root and cespitose caudex; stems erect, 3-5 dm. high, angled 

 and somewhat sulcate, sparingly hairy; leaves ascending, 8-12 cm. long; stipules deltoid, 5 mm. 

 long; leaflets 17-25, oblong to oval, 8-20 mm. long, 3-7 mm. wide, appressed-pilose on both 

 sides, obtuse at the apex; peduncles 5-10 cm. long, erect, sulcate; bracts subulate, 3-4 mm. 

 long; pedicels 1 mm. long; calyx pilose with mixed black and light hairs, the tube 6 mm. long, 

 the teeth subulate, 3-4 mm. long, unequal; corolla white or cream-colored; banner oblanceolate, 

 slightly emarginate, 14-15 mm. long; wings shorter, the blade equaling the claw, obliquely 

 oblanceolate, with a rather large auricle; keel-petals still shorter, the blade broadly lunate; 

 pod chartaceous, stipitate, the stipe about 8 mm. long, the body strongly incurved, obliquely 

 ovate, about 2 cm. long, 1-1.5 cm. thick, 8-10 mm. wide, sulcate on both sutures. 



Type locality: Ostrander's Ranch, Yosemite Valley, California. 



Distribution: Sierra Nevada region, California. 



Illustrations: M. E. Jones, Rev. Astrag. pi. 38, f. 124; Jepson, Man. El. PI. Calif./. 557. 



57. ASTRAGALUS L. Sp. PI. 1753. 



Glandula Medic. Vorl. Churpf. Phys, Ges. 2: 374. 1787. 



Glottis Medic. Vorl. Churpf. Phvs. Ges. 2: 376. 1787. 



Stella Medic. Vorl. Churpf. Phys. Ges. 2: 377. 1787. 



Aragallus Neck. Elem. 3: 12, in part. 1790. 



Alopecias Steven, Bull. Soc. Nat. Mosc. 29 2 : 143. 1856. 



Solenotus Steven, Bull. Soc. Nat. Mosc. 29 2 : 143, in part. 1856. 



Marrosema Steven, Bull. Soc. Nat. Mosc. 29' 2 : 145. 1856. 



Ailuraschia Steven, Bull. Soc. Nat. Mosc. 29 2 : 150. 1856. 



Kirchnera Opiz, Lotos 8: 65. 1858. 



Medyphylla Opiz. Lotos 8: 65. 1858. 



Hypoglottis Fourr. Ann. Sci. Linn. Lyon II. 16: 364. 1868. 



Perennial herb, usually with a woody cespitose caudex or rootstock, or rarely annuals with 

 a taproot. Leaves odd-pinnate, with entire leaflets. Flowers mostly in dense axillary pedun- 

 cled racemes. Calyx cylindric or campanulate, the lobes mostly subulate. Corolla of various 

 colors. Banner obovate, often retuse, tapering below but scarcely clawed. Wings usually 

 long-clawed, the claw about equaling the obliquely oblanceolate or more or less lunate blade, 

 which is auricled at the base on the upper side. Keel-petals with longer claw and shorter blade, 

 the latter usually broadly lunate. Stamens monadelphous (9 and 1), the sheath nearly 

 straight, and the free portion of the filaments arching upwards. Ovary usually sessile, the 

 style glabrous and straight to near the end, the stigma minute. Pod sessile or rarely subsessile, 

 coriaceous or woody, somewhat turgid, short, from ovoid to oblong, erect or ascending, rarely 

 reflexed, 2-celled, the septum formed by the inflexion of the lower suture complete. Seeds 

 several, rarely few, obliquely round-reniform, with a depressed hilum. 



Type species, Astragalus Onobrychis L. 



Perennials; beak of the pod short. 



Pod several- to many-seeded, ascending or rarely spreading. 



Leaves villous or silkv; pod more or less sulcate on both sutures; plant 



usually low and short-stemmed (except No. 1, 2. 4 and 5). 1. Mollissimi. 



Leaves strigose or glabrate; pod not sulcate on the upper suture; plant 

 leafy-stemmed. 

 Pod ellipsoid, not sulcate on the lower suture or only slightly so, 



nearly round in cross-section. 2. Uliginosi. 



Pod ovoid, deeply sulcate on the lower suture, cordate in cross- 

 section. 3. Hytoglottides. 

 Pod few-seeded, ovoid in outline. 



Pod ascending, coriaceous, cordate in cross-section; racemes dense, 



headlike. 4. Chaetodontes. 



Pod reflexed, thin-leathery or membranous, lenticular in outline; 



racemes lax. 5. Lentiformes. 



Annuals; beak of the pod as long as the ovoid, deeply sulcate body. 6. BrEWERIANI. 



1. Mollissimi 

 Pod glabrous. 



Corolla yellowish; stem elongate; pod 8-10 mm. broad. 



