316 0EDEI5 4G.— LEGUMINOS^. 



Mta. Lvs, 3 to 5' long; Ifls. abouc 1 by J', rather rcmoto from each otlicr and 

 from the stem. Petiolules scarcely 2" long. Spicate rac. terminal, solitary or 

 fascicled, 3 to 4' long. Vexillum purple, emarginate. May, Jn. 



2 A. glabra Desf. Nearly glabrous, shrubby; Iftg. oblong or elliptical, dott<:-d, 

 petiolulate, the lowest pair closo to the stem ; fls. subsessile ; ad. teeth short, lite 

 2 upper obtuse, the 3 lower longer, or nearly equal, villous; sty. hairy towards the 

 base. — Near Wilmington and jSTewbem, N. Car. Plant 4 to 5f high. Fls. dark 

 blue. Jl. (v. s. in herb. Curtis.) (A. Caroliniana Groom). 



3 A. herbacea Walt. Pubescent and somewhat hoary, shrubby; Ifts. 20 to 25 

 pairs, oblong, obtuse, dotted, the lowest pair closo to the stem; fls. subsessile; 

 ^^ie^h of the col. nearly equal, short; cor. whitish. — Pine woods, N. Car. to FLi. 

 Plant 2 to if hig'ji, grayish. Lvs. 6 to T long; Ifls. G to 8" by 3". Petioluk-s 

 1' long. Spikea many, clustered at top, very downy, G to 8' long. Jn., Jl. 



4 A. canescens Nutt. Suffruticous, and cauescently villous, Ifts. small, numerou.", 

 crowded, ovate-elliptical, subsessile, mucronate; spikes aggregate; fls. subsessile; 

 calyx leoth equal, oval acute; vex. bright blue; leg. 1-seoded. — A beautiful 

 species, 2 to 4f high, in dry, sandy soil-s, "Wis. to La. and R. Mts., and is supposed 

 to prefer localities of lead ore. Lvs. 2 to 3' long; Ifts. coriaceous, 16 to 2i pairs, 

 obtuse at base, 4 to 6" by 1 to 2". Spikes 2 to 3' long. Jl., Aug. 



36. DA' LEA, L. (In honor of Thomas Dale, an English botan 



ift 



<'alyx subcqually cleft or toothed; petals unguiculate, claws of th(! 

 wings ;ind keel aJnate to the staminate tube half way up ; vexillum 

 free, the Innb cordate ; stamens 10, united into a cleft tube ; ovary 

 '2-ovulcd ; legmue inclosed in the calyx, indehiscent, 1-seoded. — Mostly 

 herbaceous and glandular-punctate. Lvs. odd-pinnate. Stipels 0, stip. 

 minute, setaceous. Spikes mostly dense. 



D. alopeouroides Willd. Glabrous and much branched ; Ifts. 8 to 14 paira, 

 linear-oval, obtuse or retuse, punctate beneath ; spike pedunculate, oblong-cylii.- 

 dric, terminal, silky-villous ; bracts about equaling the acuminate segments of tl.c 

 cal. — (D Prairies and bottoms. 111., Mo., Car. Plant about 2f high, bushy and 

 leafy and pale green. Lfts. not moro than 4'' by 1", sessile, and nearlyin mutu'il 

 contact. Spikes 1 to 2' long. Vexillum white, wings and keel pale violet. (Ii. 

 Linusei Mx. Petalostemon Ph.) 



37. PETALOSTE'MON, Mx. (Alluding to the union of the petals 

 and stamens.) Calyx 5-tootlicd, nearly equal ; petals S, on filiform 

 claws, 4 of them nearly equal, alternate with the stamens and united 

 with the staminato tube ; stamens 5, monadelphous, tube cleft ; legume 

 1-secdcd, indehiscent, included in the calyx. — Mostly 1(. Lvs. nii- 

 equally pinnate, ex.5tipeIlato. Fls. in dense, pedunculate, tcrmir.;;] 

 spikes or heads. 



§ PcTii.osTE.MON pvoper. Calyx teeth short. ITeads not inToIucvate. Bt-octs small (a). 



a Br-icta nristate-polnted, longer than the caly.v .Nos. 1. 1 



a Br.icts oblnse or acute, not aristate, short Nos. o, 4 



g KiTiixlSTRRA, Lam. Calyl teeth very lonj;, setaceous, plumous, pappus-like. lids. 



iu^'tihienite, with broad, scale-like bracts No. 6 



i P. candidum Mx. Glabrous, erect ; Ifts. 1 to 9, all sessile, linear-lanceolale, 

 mucronate, glandular beneath ; spikes on long peduncles ; bracts setaceous, 

 lojiger than the white petals ; vex. broadly cordate, the other pets, ovate. — A tinr- 

 looking plant in dry prairies, S. and "W. States. St. 2 to 4f high, sparingly 

 branched, slender. Lfts. 9 to 18" by 3 to 5", terminal ono largest. Fl.'3. small, 

 while, crowded hi dense spikes which are 1 to 3' long. Jl. 



2 P. violaceum Mx. Minutely pubescent, erect ; lfts. 5, linear, glandular be- 

 neath; spikes pedunculate, oblong or Bubglobous, shorter than the violet petals; 

 vox. cordate, the other petals oblong, obtusa at base. — A beautiful plant, of 

 similar habit-i with the last St. slender, striate, subsimple, IJ to 2f high. Lfip, 

 nboul 1' by 1'', all sessile. Spikes 1 to 8, very dense, J to H' long. Petale o! a 

 bright violet-purple. Jl., Aug. 



