416 NORTH AMERICAN FLORA [Volume 24 



1. Onix Mulfordae (M. E. Jones) Rydb. Bull. Torrey Club 

 40:51. 1913. 



Astragalus Mulfordae M. E. Jones, Contr. W. Bot. 8: 18. 1898. 



Perennial, with a taproot and short eespitose caudex ; stems slender, erect, green, 1-4 dm. 

 high, strigose-puberulent ; leaves ascending, 5-10 cm. long; stipules hyaline, with green tips, 

 deltoid or lanceolate, 3-5 mm. long; leaflets 13-25, linear or oblong, 4-8 mm. long, glabrous 

 above, sparingly strigose or glabrate beneath; peduncles 5-10 cm. long; racemes lax, 3-8 cm. 

 long; bracts lanceolate or subulate, 1-2 mm. long; pedicels about 1-2 mm. long; calyx black- 

 strigose, the tube campanulate, 2.5 mm. long, the teeth lance-subulate, 1 mm. long; corolla 

 yellowish or dirty- white, about 7 mm. long; banner obovate, abruptly arched at the middle; 

 wings somewhat shorter, the blade obliquely obovate, somewhat arcuate, with a small auricle ; 

 keel-petals much shorter, the blade broadly lunate, nearly semiorbicular; pod strigose, stipitate, 

 the stipe 5-6 mm. long, straight, the body membranous, semioval, 10-12 mm. long, 3-4 mm. 

 wide, and 5-6 mm. thick, the upper suture straight or nearly so, the lower strongly convex 

 and broadly sulcate, the cross-section broadly cordate or triangular; seeds brown, reniform, 2.5 

 mm. long, 1.5 mm. broad. 



Type locality: Boise, Idaho. 



Distribution: Southern Idaho. 



Illustration: M. E. Jones, Rev. Astrag. pi. 67, f. 229. 



53. CONTORTUPLICATA Medic. Vorl. Churph. Phys. Ges. 

 2:378. 1787. 



Annual herbs. Leaves odd-pinnate. Flowers perfect, in head-like racemes on axillary 

 peduncles. Calyx short, turbinate, the teeth subulate. Corolla small, scarcely exceeding the 

 calyx-lobes. Banner obovate, tapering into a broad base. Wings and keel-petals clawed, 

 similar, the latter slightly longer, the blades obovate-lunate, with rather large deltoid auricles. 

 Stamens diadelphous (9 and 1 ), the tube almost straight, the free portion of the filaments arched 

 upwards. Ovary pubescent; style incurved, glabrous; stigma minute. Pod strongly falcate, 

 incurved, 2-celled, membranous, almost papery, sulcate on the lower suture, forming a complete 

 circle, at maturity splitting into two halves through the septum. Seeds numerous, reniform. 



Type species, Astragalus contortuplicatus L. 



1. Contortuplicata contortuplicata (L.) Rydberg. 



Astragalus contortuplicatus L. Sp. PI. 758. 1873. 



Contortuplicata astragaloides Med. Vorl. Churph. Phys. Ges. 2: 378. 1787. 



Annual; stem branched from the root; branches erect, ascending or decumbent, 1-3 dm. 

 long, pilose; leaves 7-12 cm. long, spreading; stipules ovate, 3-4 mm. long; leaflets 15-21, 

 cuneate, ovate or oval in outline, usually deeply notched at the apex, 7-20 mm. long, pilose 

 on both sides; peduncles 1-2 cm. long; racemes very short and head-like, 1-2 cm. long; calyx 

 long-pilose, the tube 2 mm. long, the teeth subulate, 2-2.5 mm. long; corolla white or yellowish, 

 5 mm. long; banner obovate, retuse; wings a little shorter, the blade broadly lunate, rounded 

 at the apex, with a deltoid retrorse auricle; keel-petals similar but longer and broader; pod 

 membranous, pilose, sessile, strongly falcate, forming a complete circle less than 1 cm. in 

 diameter, the body 2-2.5 mm. wide. 



Type locality: Siberia. 



Distribution: Native of the Old World from Southeastern Europe to Siberia, western India, 

 and Egypt; adventive at Westport, Massachusetts. 



Illustrations: Pall. Astrag. pi. 79; Sibth. Fl. Graeca pi. 729; Reichenb. Ic. Fl. Germ. 22: 

 pi. 149 {pi. 2200). 



54. HAMOSA Medic. Vorl. Churph. Phys. Ges. 2: 373. 1787. 



Hamaria Fourr. Ann. Soc. Linn. Lyon II. 16: 364. 1868. 



Annual or perennial herbs. Leaves alternate, odd-pinnate, with several or many leaflets. 

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



