APPENDIX. 
439 
cemea short or subcapitate, many-flowered ; flowers 5-6" long, violet or wbitisli, wings little if at all 
exceeding the rather large keel ; pod oblong, straight or recurved, black-villous or -pubescent, triangu- 
lar-turgid, the suture intruded to the middle or beyond, stipe usually exceeding the calyx.— Arctic Amer- 
ica; Labrador; Maine and Vermont; Wyoming and Colorado. 
46. A. SPARSiFLORtJS, Gray. Slightly appressed-pilose, glab rate; stems vciy slender, branched, dif- 
fuse; stipules triangular-subulate, distinct ; leaflets 4-6 pairs, obovate or snbrouuded, often emarginato, 
2-3" long; peduncles scarcely exceeding the leaves, 3-10-flowered ; llowcrs :\" long, bluish-white, the 
emarginate or bifid banner and the wings much exceeding the incurved keel ; calyx-teeth equaling the 
tube; ovary 8-12-ovuled, short-stipitate ; pod 3-6" long, coriaceous, oblong, incurved, pubescent with 
short hairs, mottled, 2-celled to the middle, very short-stipitate, ventral suture acute.— Coloi add. 
* * Californian, annual, low, erect; flowers few, capitate; Avings and banner uuich cxccciliin; (lie 
keel; ovary silky-canescent, sessile; pod unknown. 
47. A. Breweri, Gray. About a span higli, witli very short blacli and wliitish liairs; le:iili is 1 .'. 
pairs, oblong-obcordate ; stipules small, ovate, scarious ; iuiniatiir<' jiixls glnUosi'-ov ate rii < l. ennMled, 
6-ovuled, twice longer than the calyx, dorsal suture slightly intruded. 
* * * Southern and eastern species ; racenies spikelike, most usually short ; calyx m \ < r hlark hairy ; 
pod glabrous, reticulated, sessile or searcely siipilat*', oblong, incurved. 
48. A. LiNDliEiMERi, Eng. Annual, many-stennned, dift'nse, glabrous; leaflets (i s paiis, nariow- 
oblong, mostly emarginate ; raceme subcapitate ; calyx-teeth subulate-setaceous, about twice longer tluui 
the tube; corolla violet, i' long; keel rather large, little shorter than the wings and broad scarcely 
emarginate banner ; pod ascending, upon a spreading pedicel, oblong-linear. 1' long or more, snbfalcate, 
compressed, transversely reticulate-veined, substipitate, bi(arinaf(> on the hack and x?-celle(l to the mid- 
dle, ventral suture acute. — Texas. 
49. A. msTORTUS, T. &, G. Perennial, low, diffuse, many-stemme<l, subglabrons; leaflets 8-12 pairs, 
oblong, emarginate ; flowers in a short spike, 4" long, narrow, pale-jmrple ; calyx-teeth broad-siil)nlate, 
half-shorter than tlie dark-puberulent tnhe; banner ih eply emarginate: |i<ids i!-'.) ' Iinig. ovale- or hmei- 
oblong, arched, thick-coriaceous, minutely relienlated, sul)ierete, 1-cclled, .silicate at the siit iiics. esiie- 
cially on the back. — S. Illinois, Arkansas and Texas. 
50. A. OBCORDATUS, Ell. PereTUiial, low, diti'iise; leallets 7-12 pairs, ol)coidate; lha\er> ii,i]e-|nirjtle, 
4" long; pods 1' long, lunate, sulcate dorsally, ventral suture acnte. — I'Iniiila, (M omia. 
51. A. GLABER, Mx. Perennial, tall, erect; lealh'ts 9-18 iiairs, elliptic- or lim'ar-ohl.nm : llnwi-rs 6'' 
long, white; pods oblong-linear, 1' long, arcuate or st i ai-ht i>i), sulcate on the back and 'i-e.-lled to the 
middle, ventral suture prominent. — ^N. Carolina to Florida. 
^ 15. LOTIFLOEI. Perennial and nearly like the last division of ^ Orohoidci, but villous or * a- 
nescent, lower, and with yellou-i.sli flowers; j)od senji-ovate or ohlonir. tiii<;i<l. ein iaeeoiis. >-uht i ian- 
gular, with the back gibbous and more or less imjiressed, the ventral suture ]iiomiiM iil; eomlla 
little exceeding the calyx, the keel indexed a!)ove ; ealyx-teeth exreedin- the tuhe. 
52. A. VILLOSCS, Mx. Loosely villous ; stems a sj>an ]iit;h. ascemiiiii,f : leallets oval, refuse : heads 
many-flowered, long-peduncled ; corolla 4" long ; pod very villous, 2-( i lli (l ne.irly to the midille. c ross- 
section obcordate. — S. Carolina to Florida and Louisiana. 
53. A. LOTIFLORUS, Hook. Hoary or eiuen'ons with appressed hairs: stems \eiy short : halhts 
lance-oblong; peduncles exceeding the leaves or very short ; lie;ids f. w-ilov, rr. .1 : e:ily\-t( . ih snhuiate. 
exceeding the tube; pod about 1' long, oblon.u-o\ ate, more inllated. suhenii. - . , ut . the ein-.s-s. , i idu oho- 
vate, retuse, or usually broadly obcordate toward the base.— From T.-xas and Nrl.r.i-ka h> lli'- K'o' k\ Mt>. 
and Hudson's Bay. 
§ 15". (PTEROCARPL) Pod sessile. e..riar,-.,u~, oval, 1' long or more, stion;:!y (tlH-miiipn ss. <l and 
laterally winged, acute and eompre-sed at the ajiex. glahroiis. traus\er-ely i u-''-' '\ ei le .!. -li;;htly 
sulcate, the dorsal suture nearly meetini;- the suluieiu e^>ed \ential om-. rereunial. 
54. A. PTEROCA];m s, S. Watsun. See iiai^c 71. and Tlale XII. 
0 16. ARGOI'HYLLl. Pod se.-sile, (exei i-t in .1. lUikicilliii.) mostly thiek < m . on. and ol.eom- 
pre.ssed, the imiire-srd or intrinled dorsnl suture nuu'e ^tv less a]ijnoaehinL; \\\<- veiilial. not -J e,-ili d, 
pubescent. Low, white-silky or hoary: stipnles <listinet. nearly IV.e : il,,u ,i s s)m< at or -uIm a)M- 
tate, violet or puridish ; calyx-teeth shorter than the e.sually olihmg or > > limit ie tnhe. 
" Annual or biennial, niany-stemmed ; llowers rather snnill, jiurplish-white : pod inllated, meml.ra- 
nous, incurved. 
55. A. ri-nENTr,s>nir>, T. <fe G. Dwarf, hirsute-. . ail ets oblong 
orobovate; flowers few, subracemoee npon a short i- . . eampamilate 
