314 Okdeb 46.— LEGUMINOS^. 



6 M. macuMta "Willd., with Ivg. marked with a purple spot, and pods compactly 

 spiral, and echinate somewhat like No. 4, said to be naturalized South ; we have 

 not met with it, unless an imperfect specimen from Potsdam, N. T., be this plant 

 Other species of this curious genus are occasionally found in gardens. 



31. fflELILO^TUS, Tourn. Melilot. {La,t. mel, honey, and lotus; 

 in drying it exhales a sweet odor.) Calyx tubular, 5-toothed, persist- 

 ent ; corolla deciduous, keel petals completely united, shorter than the 

 alse or vexillum ; stamens diadelphous (9 & 1) ; legume rugous, longer 

 than the calyx, 1 to few-seeded. — Genus taken from Trifolium. Lvs. 

 pinnately trifoliate, veins of the Ifts. simple or forked. Fls. in racemes. 



1 M. officinalis "Willd. St. erect, with spreading branches; Ifts. obovate-oblong, 

 obtuse, dentate; rac. spioate, axillary, paniculate, loose; cal. Jmlf as long as the 

 yellow corolla ; leg. 2-seeded, ovoid. — Alluvial meadows. St. sulcate, about 3f 

 high. Lfts. smooth, with remote, mucronate teeth. Fls. in long, 1-sided, slender 

 racemes; petals of nearly equal length. The whole plant is sweet-scented. Jn. 

 § Bur. 



2 M. ^Iba Lam. Sweet-soented Clotee. White Melilot. St. erect, branched, 

 lfts. ovate-oblong, tmncate and mucronate at the apex, remotely serrate ; stip. 

 setaceous; cal. less than half as long as the white cor.; leg. 2-seeded, ovoid. — 

 (D Alluvial soils. St. robust, tery branching, sulcate, 4 to 6f high. Lfts. 1 to 2' 

 long, more obtuse at the apex than at base, mucronately serrate. Fls. numerous, 

 the racemes more loose and longer than in the last. Petals unequal ; banner 

 longer than wings or keel. Very fragrant when dried. JL, Aug. § \ Bur. 



32. PSORA^LEA. (Gr. ipupdXeog, leprous or scaly ; alluding to the 

 glandular dots.) Calyx 5-cleft, campanulate ; segments acuminate, lower 

 one longest ; stamens diadelphous, rarely somewhat inonadelphous ; leg- 

 umes as long as the calyx, 1-seeded, indehiscent. — U or f}. Often 

 glandular-dotted ; stip. cohering with the base of the petiole. Fls. 

 cyanic. 



* Leaves palmatcly 1 and 8 (rarely 5)-foliate Nos. 1, 3 



* Leaves palmately 5, or 5 and T-foliate Nos. 8, 4 



* Leaves pinnsitely 3 or 1-foliate Nos. 5---8 



* Leaves pinnate, 19 to 21-foliat6 No. 9 



1 P. can^scens Mx. Very branching, canescently pubescent, lower lvs. 3-foliaie, 

 upper 1-foliate, lfts. roundish-ohovaie, obtuse, tapering at base into a petiolule, dot- 

 ted. — Sandy woods, N. Car. to Pla. Plant 2f high, excessively branclied, form- 

 ing a globular bush. Fls. in small clusters at the end of the branchlets ; smaU, 

 " blue at first, changing to dull yellow" (Mettauert. Cal. gibbous, almost spurred 

 at base. May — Jl. 



2 P. floribiiQda Nutt. Canesoent, much branched; lfts. 3, rarely 5, doited, oh- 

 long-oiovate, varying to linea/r ; stip. setaceous ; rac. slender, many-flowered, twice 

 longer than the leaves ; pedicels as long as the flowers, and longer than the small, 

 ovate-acuminate bracts; vex. roundish; leg. smooth. — Alluvial soils, 111. (Mead), 

 Ark. W. to the R Mta St. 2 to 4f high, branches spreading. Lfts. 1 to 2' by 

 2 to 4''. Common petiole J to V long. j?ls. bluish purple, 3" long, 15 to 30 in 

 the very canesoent racemes. Jn. 



3 P. subaoaililis Torr. & Gray. Nearly acaulescent, hirsute; lvs. 7-foliate on very 

 long petioles ; lfts. obovate-oblong ; fls. in dense, egg-shaped racemes ; cal. much 

 shorter than the cor. — Tenn., near Nashville (Dr. Roam in N. Am. Flora). Lvs. 

 and flower-stalks almost radical, 6 to 10' long; lfts. about 1' long. 



4 P. lupinellus Mx. St. slender, glabrous; lvs. 5 to 7-fohate; lfts. linear-fili- 

 form ; rac. longer than the lvs., many-flowered ; pod incurved at base, recurved 

 at apex, so as to simulate the letter S. — Pine barrens, S. Car. to Fla. Sts. about 

 2f high. Lfts. 2 to 3' long. Pis. as large as in P. floribunda, May, Jn. 



5 P. variegdta Nutt. Virgate, smoothish; lvs. 1-foliate, remote; lfts. linear (the 

 lower rarely 3-foliate and oblong) ; ped. shorter than the lvs. ; spikes rather dense- 

 flowered.— Near St. Mary's, Ga. Bt. about 2f high. Lfts. 2 to 4' by 2 to 4". 

 Fls. pale violet. 



