Part 5, 1929] 



FABACEAE: GALEGEAE 



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leaflets 15-19, linear or oblong, acute at each end, 1-4 cm. long, 1-3 mm. wide, glabrous above, 

 strigose beneath ; peduncles 5-8 cm. long; racemes dense, 3-5 cm. long; bracts linear-lanceolate, 

 6-8 mm. long, ciliate, at last reflexed; flowers nearly sessile, in age reflexed; calyx shaggy- 

 villous, the tube 8 mm. long, somewhat urceolate when young, in age inflated, the calyx-teeth 

 lanceolate, 2-3 mm. long; corolla white, 15-16 mm. long; banner obovate, arched above the 

 middle; wings nearly as long, the blade oblanceolate, slightly falcate, with a large auricle; 

 keel-petals shorter, the blade broadly lunate, purple-tipped; young pod short-stipitate, gla- 

 brous, the stipe curved, the body oval in outline, with a sulcus on each side of the upper suture; 

 mature pod not seen. 



Type locality: Aztec, New Mexico. 



Distribution: Southern Colorado and northern New Mexico. 



Illustration: M. E. Jones, Rev. Astrag. pi. 63. 



36. CNEMIDOPHACOS Rydb. Bull. Torrey Club 32: 663. 1906. 



Clenophyllum Rydb. Bull. Torrey Club 32: 663. 1906. 



Stout perennial herbs, with a cespitose woody caudex. Leaves pinnate, usually with 

 many narrow leaflets; stipules usually slightly united with the petioles, but strongly connate 

 around the stem. Flowers perfect, mostly in strict many-flowered racemes. Calyx cam- 

 panulate, the teeth linear-lanceolate, mostly equaling the tube in length. Corolla yellow, 

 ochroleucous, white, or purplish. Banner obovate, tapering at the base, often retuse at the 

 apex, only slightly arched. Wings shorter, the blade oblanceolate, usually with a rounded 

 auricle, longer than the claw. Keel-petals broader and shorter, the blade obliquely obovate, 

 or semi-orbicular, with a reflexed auricle, shorter than the claw. Stamens diadelphous (9 and 

 1), the sheath straight to near the oblique apex, the free portion of the filaments arched upward. 

 Ovary sessile; style curved towards the apex; stigma minute. Pod one-celled, coriaceous, 

 sessile, ovoid or ellipsoid in outline, often thicker than wide {i.e., the diameter from center to 

 center of the valves greater than the distance between the sutures), rounded at the base, 

 abruptly contracted at the apex, both sutures rather prominent. Seeds numerous, obliquely 

 reniform, with a deep-seated hilum. 



Type species, Astragalus flavus Nutt. 



Plant more or less caulescent; pod more than 1 cm. long. 

 Pod erect or ascending; leaflets articulate to the rachis. 

 Calyx-lobes more than half as long as the tube. 



Corolla more than 15 mm. long; pod not sulcate, 1.5-3 cm. long. 

 Calyx more or less black-hairy. 



Leaflets glabrous or slightly hairy on the upper side; pod 

 glabrous. 

 Flowers nodding; leaflets loosely villous or pilose 



beneath. 1. C. reventus. 



Flowers ascending; leaflets strigose beneath. 2. C. reventiformis. 



Leaflets nearly equally appressed-canescent on both sides; 



pod short-pubescent, at least when young. 3. C. Knowlesianus. 



Calyx white-hairy, its teeth nearly equaling the tube; leaflets 



loosely pubescent on both sides; pod pubescent. 4. C. hooilianus. 



Corolla less than 15 mm. long; pod usually more or less sulcate on 

 the lower suture, less than 1.5 cm. long, canescenl. 

 Calyx-tube considerably longer than broad; inflorescence 

 much exceeding the leaves. 

 Calyx villous with long loose hairs, the teeth as long as the 



tube. 6. C. argillosHS. 



Calyx strigose or pilose with short hairs, the teeth shorter 

 than the tube. 

 Corolla ochroleucous, 12-15 mm. long; pubescence of 



the calyx rather loose. 7. C. flavus. 



Corolla white or purple, 7-11 mm. long; pubescence of 

 the calyx strictly appressed. 

 Plant canescent; corolla white, the keel tipped with 



purple. 8. C. conferliflorus. 



Plant nearly glabrous; corolla purple. 9. C. moencoppensis. 



Calyx-tube about as broad as long; inflorescence scarcely 



exceeding the leaves. 10. C. sophoroides. 



Calyx-lobes less than half as long as the tube. 



Stem flexuose; leaflets few or none, about 1 cm. long. 



Plant sparingly strigose; leaflets linear, as well as the rachis 



rather firm. 11. ( '. loanus. 



Plant glabrous; leaflets and upper part of the rachis filiform. 12. C. rafaelensis. 



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