APPENDIX. 445 



peduncles mucli exceeding the leaves, loosely 5-12-flowered ; corolla and calyx nearly as in A. pauciflorus : 

 young pod ovate-oblong, canescent.— Washington Territory. 



(2.) Calyx-teetli short or about equaling the tube ; upper stipules nearly distinct. Slender, rather 



rigid, branched, piunately or by abortion somewhat simply leaved, the petioles sometimes naked; 



flowers m loose long-peduncled racemes, ochroleucous or purplish, the keel a little shorter than the 



banner, 



(2».) Pods linear or linear-oblong, about 1' long ; stems slender. 



117. A. CAMPESTRIS, Gray. Keel with a long inflexed beak; pod oblong-linear, puberulent. See 

 page 76. 



118. A. SEKOTiNUS, Gray. Cinereous-puberulent, glabrate ; stems ascending, 9-18' high • leaflets 4-10 

 pairs, linear ; racemes virgate, 9-20-flowered; calyx-teeth 3-4 times shorter than the tube ; corolla pur- 

 plish, about 4" long, the inflexed tip of the keel short, somewhat narrow ; pod linear, nearly glabrous.— 

 Washington Territory. 



119. A. DECUMBENS, Gray. Cinereous- or silky-pubescent ; stems diffuse or ascending, 6-10' high ; 

 petioles sometimes somewhat flattened, mostly with 7-13 Unear-lanoeolate acute leaflets ; racemes !5-10- 

 flowered ; calyx-teeth attenuate, little shorter than the tube ; corolla 4-41" long, ochroleucous or pur- 

 plish, the keel with a short inflexed tip ; pod broad-linear, straight or falcate, about 1' long, hoary- 

 puberulent.— Eocky Mts. of Colorado and northward. 



120. A. JUNCEUS, Gray. Petioles frequently naked; flowers distant, the keel strongly incurved. See 

 page 76. 



(2*.) Pod semi-ovate, i' long ; stems rather stout. 



121. A. Palmbri, Gray. Proo. Amer. Acad. 7. 398. Cinereous-puberulent, glabrate ; stem over l"^ 

 high; stipules very short ; leaflets 8-13 pairs, oblong, 6-9" long; spikes long-peduncled, strict, 4-5' long, 

 rather loosely many-flowered ; bracts subulate, equaling the very short pedicels ; calyx-teeth subulate, 

 about equaling the campanulate tube ; half-shorter than the purple-blue (3" long) corolla; pods pnberu- 

 lent, flattened, erect on spreading pedicels, 5-7-seeded, 6" long.— Resembling ^._po)TecfMS in habit. S. 

 Arizona. 



(d.) Stipules Rcarious, connate ; pod short, sessile, few-seeded. Acaulescent, csespitose, silky-canes- 

 cent ; leaves simple, lanceolate- or spatulate-linear, rarely some of them 3-5-foliolate ; scapes ex- 

 ceeding the leaves, many-flowered; corolla purple or rose-color. 



122. A. C^SPITOSUS, Gray. Scapes 2-6' long ; racemes spikelike; calyx-teeth narrowed, about equal- 

 ing the tube ; keel very obtuse, much shorter than the banner ; pod oblong or broad-lanceolate, 3-5" 

 long, scarcely curved ; somewhat flattened,— W. Nebraska. 



* * Cushioned ; flowers scarcely exserted from among the simple leaves ; pod many-ovuled, some- 

 what turgid, margined with rather strong sutures. 



123. A. siMPLiciFOLros, Gray. Leaves narrow, acute ; flowers few, purple ; pod 4" long, oblong. See 

 page 77, and Plate XII. 



* * * Caulescent, often depressed ; flowers subsessile in the axils of the leaves ; pods 3-4-ovuled, 

 usually 1-seeded, ovate, sessile; leaves pinnate, with few leaflets. 



124. A. Kbntbophtta, Gray. Leaflets linear-subulate, rigid, spinulose ; pod 3" long, ovate, com- 

 pressed. See page 77, 



(B.) Leaves apparently palmately 3-foliolate. 

 § 27. TEIPHYLLI, Pod conical-ovate, acuminate, not stipitate nor compressed, coriaceous, many- 

 ovuled, somewhat included in the calyx, neither suture intruded. Perennial, csespitose from a 

 much-branched woody caudex, low, silvery-silky, with crowded leaves ; stipules rather large, 

 thinly scaiious, connate, imbricate upon the branches ; leaves pinnately 3-foliolate, very rarely 

 5-foliolate^ the leaflets crowded. 



125. A. TRIPHYLLUS, Pursh. Acaulescent, glossy silky; stipules hyaline, glabrous ; primary leaves 

 sometimes 5-foliolate with cuneate oblanceolate leaflets, the rest with 3 longer lanceolate leaflets, long- 

 petioled, exceeding the sessile crowded flowers ; calyx-teeth half-shorter than the cylindrical tube ; corolla 

 ochroleucous or white, 1' long ; pod villous, included. — Nebraska to the Saskatchewan. 



126. A. TRIDACTYLICUS, Gray. Proc. Amer. Acad. 6. ,527. With the habit and leaves of the last ; 

 stipules villous ; flowers 5" long, pale-purple ; calyx-teeth equaling the tube ; pod globose-ovoid, 3-4" 

 long, puberulent, 12-ovuled,'3-4-seeded; calyx deciduous, exposing the pod, — Eocky Mts,, Colorado, 



127. A. SEEICOLBUCUS, Gray. Very broadly csespitose, silky-hoary ; stems branched, prostrate, the 

 branches covered with the villous stipules ; leaves all 3-foliolate, not equaling the 2-6-flowered filiform 

 peduncles ; leaflets 3" long, oblanceolate or ouneate-oblong ; calyx-teeth about equaling the campanulate 



