APPENDIX. 
445 
peduncles much exceeding tlie leaves, loosely 5-12-flowered ; corolla and calyx nearly as in A.pmmilorus; 
young pod ovate-oblong, canescent. — Washington Territory. 
(2.) Calyx-teeth short or about equaling the tube; upper stipules nearly distinct. Slender, rather 
rigid, branched, pinnately or by abortion somewhat simply leaved, the petioles sometimes uaked; 
flowers in loose long-peduncled racemes, ochroleucous or purplish, the keel a little shorter than the 
banner, 
(2a.) Pods linear or linear-oblong, about 1' long; stems slender. 
117. A. CAMi'ESTRis, Gray. Keel with a long inflexed beak; pod oblong-liuear, puberulent. See 
page 76. 
118. A. SEROTINUS, Gray. Cinereous-puberulent, glabrate ; stems ascending, 9-18' high ; leu (lets 4-10 
pairs, linear ; racemes virgate, 9-20-flowcred ; calyx-teeth 3-4 times sliorter than the tube ; corolla pur- 
plish, about 4" long, the inflexed tip of the keel short, somewliat nanow ; pod linear, nearly glabrous.— 
Washington Territory. 
119. A. DECUMBENS, Gray. Cinereous- or silky-pubescent ; stems diffuse or ascending, fi-10' liij^h ; 
petioles sometimes somewhat flattened, mostly witli 7-1;} linear-lanceolate aente lealh'ts; meemes :>-!()- 
flowered; calyx-teeth attenuate, little shorter than the tube; corolla 4-4^" long, ochrolciicmis or pur- 
plish, the keel with a short inflexed tip; iiod broad-line;ir, .s!i;iight or falcate, about 1' long, hoary- 
puberulent. — Eocky Mts. of Colorado and northward. 
120. A. JUJfCEUS, Gray. Petioles frequently naked ; llowers distant, the keel .strongly ineni \ ( (l. See 
page 76. 
(2*'.) Pod semi-ovate, |' long ; stems rather stout. 
121. A. Palmeri, Gray. Proo. Amer.Acad.7. 398. Cinereous-puberulent, giabrate ; stem over 1 
high ; stipules very short ; leaflets 8-13 pairs, oblong, 6-9" long; spikes long iiediiueled, strict, i .") J<uig, 
rather loosely many-flowered ; bracts subulate, eqiialifig tlie \<-ry sliort [ledii < !s : cii yx-teetli >ubiilaf<', 
about equaling the campanulate tube; half-shorter than the purple-blue (.'i" long) corolla; pods puberu- 
lent, flattened, erect on spreading pedicels, 5-7-seeded, 6" long.— Resembling A. pomctns in habit. S. 
Arizona. 
{d.) Stipules scarious, connate ; pod short, sessile, few-seeded. Acaulescent, ca spi to.se, silky-canes- 
cent ; leaves simple, lanceolate- or spatulate-linear, rarely some of them 3-6-foliolate ; scapes ex- 
ceeding the leaves, many-flowered; corolla purple or rose-color. 
122. A. CJESPiTosus, Gray. Scapes 2-6' long ; racemes spikelike ; calyx-teeth uarrowed, 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- 
^Yhat turgid, margined with rather strong sutures. 
123. A. siMPLiciFOLius, 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-ovuIed, . 
usually 1-seeded, ovate, sessile; leaves pinnate, with few leaflets. 
124. A. Kentrophyta, Gray. Leaflets linear-subulate, rigid, spinulose ; pod 3" long, ovate, com- 
pressed. See page 77. 
(B.) Leaves apparently palmately 3-foliolate. 
$ 27. TRIPHYLLI. Pod conical-ovate, acuminate, not stipitate nor compressed, coriaceous, many- 
ovuled, somewhat included in the calyx, neither suture- intruded, rerenninl, cies]titose from a 
much-branched woody caudex, low, silvery-silky, with crowded leaves; stipules rather large, 
thinly scarious, connate, imbricate upon the branches ; leaves pinnately 3-foliolate, very rarely 
5-foliolate^ the leaflets crowded. 
125. A. TRiPHYLLUS, Pursh. Acaule^<■eni, glossy silky; stipules hyaline, ghabrous ; priumry 1« a\ es 
sometimes 5-foliolate with cuneate oblanceolate leaflets, the rest with 3 longer lanceolate leaflet.^, long- 
petioled, exceeding the sessile crowded flowers; calyx-teeth half-shorter than the cyliudrical tube; corolla 
ochroleucous or white, 1' long; pod villous, included. — Nebraska to the Sa.skatclunvan. 
126. A. TRIDACTYI.ICUS, Gray. Proc. Amer. Acad. 6. .527. With the habit and leaves of the last; 
stipules villous ; flowers 5" long, pale-purple; calyx-teeth equaling tin' tube: pod globose-ovoid, .3-4" 
long, puberulent, 12-ovuled, 3-4-8eeded ; calyx deciduous, exposing the pod. — K'ocky Mts., Coloraflo. 
127. A. SERICOLEUCUS, Gray. Very broadly ctespitose, silky-hoary : stein,-; liraneli. il, iin>sfrate, the 
branches covered with the villous stipules ; leaves all 3-folioIate, n(it equaling the 2-ti-flosvered tihform 
peduncles; leaflets 3" long, oblanceolate or cuneate-oblong ; calyx-teeth about equaling the campanulate 
