APPENDIX. 443 



92. A. PECTINATUS, Dougl. AsLy-puljeralent, glabrate ; branches striate, angled ; calyx-teeth much 

 shorter than the cyliudrio tube ; flowers white, many in a rather short raceme, the banner elongated ; 

 pod i' long, pendulous, glabrous, cuspidate, the dorsal suture very thick.— Nebraska to the Saskatchewan. 



93. A. NUDUS, S. Watson. Pod erect, larger ; flowers few, blue. See page 74. 



J 24. SCYTOCAEPI. Pod coriaceous, ovate or oblong, rarely cylindrical, turgid, not sulcate and 

 neither suture intruded. 



* Stipe thick, about equaling the cylindrical calyx ; flowers 1' long. 



94. A. Pbeussii, Gray. Nearly glabrous ; stem erect, over 1° high ; stipules ovate, distinct ; leaflets 

 6-S pairs, rather fleshy, subrounded, i' long, sometimes retuse ; bracts ovate, small ; calyx-teeth subu- 

 late, 3-4 times shorter than the tube ; corolla apparently purple, the straightish keel a little shorter than 

 the wings, banner elongated; pod oval-oblong, 1' long, straight, firmly coriaceous, inflated, glabrous, 

 pointed, abruptly contracted at base. — S. Nevada. 



* * Pod sessile or scarcely stipitate. 

 (a.) Nearly acaulesoent, silvery-silky, large-flowered, perennial. 



95. A. CHAMiELBtJCB, Gray. Scapes short, 3-8-flowered ; pod J-l' long. See page 74. 



(6.) Low, annual or biennial, canescent ; flowers small ; stipules distinct. 



96. A. TEPHRODES, Gray. Hoary-villous ; stems very short ; stipules scarious, triangular-ovate ; 

 leaflets 7-12 pairs, oblong and oval ; leaves scapelike, at length 3' long and exceeding the leaves, spi- 

 cately many-flowered ; calyx-teeth half-shorter than the oampanulate tube ; corolla purple ; pod pubes- 

 cent, arcuate-ovate, gibbous dorsally, acute, chartaoeous-coriaceous, -J-' long or more. — New Mexico. 



97. A. AKIDUS, Gray. Silky-oanesoent, annual ; stems a span high, difi'use-ereot, leafy ; stipules min- 

 ute ; leaflets 5-6 pairs, oblong, white-silky on both sides ; peduncles spicately 5-8-flowered, shorter than 

 the leaf; calyx-teeth shorter than the short-oampanulate tube; corolla ochroleucous, 2-2|"loug; pod 

 canescent, gibbous-ovate, i' long, thinly coriaceous, (or perhaps membranous,) inflated. — S. California. 



(c.) Canescent-downy ; stem rather stout, 1° high or more ; flowers and fruit in very dense oblong or 

 cylindric spikes ; stipules scarious, distinct. 



98. A. PYCNOSTACHIUS, Gray. Proo. Amer. Acad. 6. 527. Leaflets in many pairs, oblong, 3-6" long, 

 equally downy both sides, obtuse or retuse, mucronate ; peduncles equaling the leaves, 2-3' long ; spikes 

 1' long in flower, 2' long in fruit ; calyx-teeth subulate, shorter than the short campanulate tube ; corolla 

 4" long, apparently pale ; pod coriaceous, ovate, 4-5" long, glabrous, turgidly lens-shaped, cuspidate, re- 

 flexed, 1-3-seeded, sutures acute. — Salt-marshes, Baulinas Bay, California. 



id.) Perennial, pilose-silky, decumbent ; flowers 4-5" long ; stipules scarious, connate. 



99. A. S0XOEJ3, Gray. Stems slender, decumbently diffuse or prostrate ; leaflets 7-8 pairs, oblong- 

 linear or lanceolate, acute, canescent both sides with close-pressed silky hairs ; peduncles exceeding the 

 leaves, spicately 8-12-flowered ; calyx-teeth setaceous, equaling the campanulate tube ; corolla purple, 

 incurved, the inflexed keel produced into a beak ; pod hoary-puberulent, ovate-lunate, i' long, acuminate, 

 turgid, chartaoeous-coriaceous, the sutures prominent. — Arizona, Sonora. 



(e.) Glabrous or pubescent, perennial, stems ascending or erect, usually flexuous ; stipules mostly 

 distinct ; flowers 4" long, (7-8" long in A. HaUii;) pod often spreading or pendulous, very shortly 

 stipitate or sessile ; calyx gray- or dark-pubescent, the teeth shorter than the tube. 



100. A. GHACU^BXTUS, Gray. About 1° high, erect, appressed-pubescent ; leaflets oblong-linear, at- 

 tenuate at base ; racemes loose ; corolla purplish ; pod chartaoeous-coriaceous, oblong, about 1' long, 

 inflated, obtuse at each end, straightish, ashy-pubescent, sessile.— New Mexico. 



101. A. Fendleri, Gray. Glabrous or appressed-puberulent, erect, over 1° high ; leaflets oblong or 

 linear-oblong; racemes long-pednnoled, loosely purple-flowered; pod oval, inflated, chartaoeous-coria- 

 ceous, about 1' long, straight, pointed, minutely puberulent, very shortly stipitate. — New Mexico, Colo- 

 rado. "Probably passing into yl.JfeXMOSMS." 



102. A. Hallii, Gray. Subcinereous-pubescent, glabrate; stems rather stout, 1° high, ascending; 

 stipules subulate ; leaflets 9-12 pairs, narrow-oblong, 4-7" long, subcuneate, retuse ; peduncles exceeding 

 the leaves : flowers violet, 20 or more, in a dense head-like raceme ; calyx dark-pubescent, broad-cam- 

 panulate, very gibbous at base, 3" long, the rather obtuse broad teeth 3-4 times shorter ; pod oblong, 

 inflated, 7-10" long, glabrous, straight, pointed, chartaceous-coriaceous ; stipe 1" long. — Colorado. 



103. A, FLBXUOSDS, Dougl. Ashy-puberulent, ascending, 1° high ; leaflets oblong- or cuneate-linear, 

 obtuse or retuse ; peduncles exceeding the leaves ; racemes mostly elongated, loose ; calyx hoary-pubes- 

 cent, teeth 3 times shorter than the tube ; corolla white or purplish ; pod cylindric, 8-11" long, 2" broad, 

 puberulent, thinly coriaceous, pointed, straight or subincurved, stipe very short but evident. — Nebraska 

 to the Saskatchewan and Eocky Mts. 



