314 ORDER 46. LEGUMINOSJE. 



6 M. maculata "Willd., with Ivs. marked with a purple spot, and pods compactly 

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

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

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



31. MELILOTUS, Tourn. MELILOT. (Lat. md, 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 

 alae or vexillurn ; 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. officiiialis Willd. St. erect, with spreading branches; Ifts. obovate- oblong-, 

 obtuse, dentate; rac. spicate, axillary, paniculate, loose; cal. half 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. 

 Eur. 



2 M. dlba Lam. SWEET-SCENTED CLOVER. WIIITE MELILOT. St. erect, branched, 

 Ifts. ovate-oblong, -truncate and mucronate at the- apex, remotely serrate ; slip, 

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

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

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

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

 longer than wings or keel. Yery fragrant when dried. Jl., Aug. f Eur. 



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

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

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

 umes as long as the calyx, 1-seeded, indchiscent. "4 or t>. Often 

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

 cyanic. 



* Leaves palmately 1 and 3 (rarely r>)-foliate t Nos. 1, 2 



* Leaves paluiately 5, or 5 and 7-foliate Nos. 3, 4 



* Leaves pinnately 3 or 1-t'oliate Nos. 58 



* Leaves pinnate, '19 to 21-foliate No. 9 



1 P. canscens MX. Yery branching, canescently pubescent, lower Ivs. 3-foliate, 

 upper 1-foliate, Ifts. roundish- obovate, obtuse, tapering afc base into a petiolule, dot-, 

 ted. Sandy woods, N. Car. to Fla. Plant 2f high, excessively branched, form- 

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

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

 at base. May Jl. 



2 P. floribunda Nutt. Canescent, much branched; Ifts. 3, rarely 5, dotted, ob- 

 long-obovate, varying to linear; stip. setaceous; rac. slender, many-flowered, twico 

 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. Mts. St. 2 to 4f high, branches spreading. Lfts. 1 to 2' by 

 2 to 4''. Common petiole 7} to 1' long. Fls. bluish purple, 3'' long, 15 to 30 in 

 the very canescent racemes. Jn. 



3 P. subacaulis Torn & Gray. Nearly acaulescent, hirsute; Ivs. 7-foliate on very 

 long petioles ; Ifts. obovate-obiong ; fls. in dense, egg-shaped racemes ; cal. much 

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

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



4 P. Lupinellus MX. St. sknder, glabrous; Ivs. 5 to 7-foliate ; Ifts. linear-fili- 

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

 at apex, so as to simulate the letter S. Pine barrens, S. Car. to Fla. Sts. abot-t 

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



5 P. virgata Nutt. Virgate, smoothish ; Ivs. 1-foliate, remote ; Ifts. linear (the 

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

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

 Fls. palo violet. 



