98 LKorMixos.i:. (ri-Lsic family.) 



-. M. dcnticulata, \\'illtl. Slcms prostrate; leaflets ol)o\ ate or olicor- 

 date, ileiiticiilate ; sii|iulcs eiliatc-tootlieil ; 8i)ike8 2-r)-flowere(i, the flowers 

 puii)lisli ; lefxiiine flat, coiled, the thin marf^iii fringcrl with a double row of 

 curved hooked liristles. — Waste ground. Introduced. 



3. M. maculata, Willd. Like tlu- ])recedin{;;, l)Ut the leaflets mo.stly 

 purplisli ill tlie centre, the stipules more strongly toothed, aud the margins 

 of the leguuio tiiicker. — New Orleans. Introduced. 



4. MELILOTUS, 'iV.iirn. .Mki.ii.ut, Sweet Clover. 



Calyx 5-toothed ; the teeth long and e(|ual. Corolla deciduous. Wings 

 and keel cohering. Stamens diadclphous (9 & 1). Legume ovoid, cori- 

 aceous, veiny or rugose, longer tlian the calyx, 1 - 4-seeded, scarcely dehiscent. 

 — Smooth herbs. Leaves trifoliolate. Leaflets often toothed. Stipules ad- 

 nate to the petiides. Flowers yellow or white, in axillary racemes. 



1. M. officinalis, Willd. stem erect, branching; leaflets obovate-ol> 

 long, tootliod ; flowers yellow ; vexillum striped with brown, as long as the 

 keel and wings ; legume obovate, rugose. — Cultivated ground. Introduced. 

 d) and (2) — Stems l"-3° high. Legumes drooping, 2-secded. 



2. M. alba, Lam. Stem erect, branching; leaflets oblong, truncate, ser- 

 rate ; racemes elongated ; flowers white ; vexillum longer than the wings 

 and keel; legumes ovate, rugose, 1-seeded. — Cultivated grounds. Intro- 

 duced. (T) — Legumes drooping. 



3. M. parviflora, Desf. Annual; stems ascending; leaflets of the 

 lower leaves roundish entire, of the ujjper oblong, denticulate ; flowers very 

 small, densely spiked, yellow; legume ovate, rugose, 1-seeded. — Waste 

 ground. Introduced. 



5. TRIFOLIUM, L. Clover. 



Calyx 5-cleft ; the teeth subulate or setaceous. Corolla withering or per- 

 sistent ; the keel shorter than the wings, and united with tliem by tlieir claws. 

 Stamens diadelphous (9 & 1 ). Legume smooth, membranaceous, 1 - 6-seeded, 

 often shorter than the calyx, scarcely dehiscent. — Tufted or diffuse herbs. 

 Leaves trifoliolate, the leaflets mostly toothed. Stipules adnate to the jjeti- 

 oles. Flowers (in our species) capitate. 



* Fruiting calyx erect. 



1. T. pratense, L. (Eep Clover.) Hairy; stems erect; leaflets ob- 

 long-ovate or oval, often cmarginate, slightly serrulate ; heads large, ovate ; 

 calyx teeth setaceous, hairy; flowers purple. — Around dwellings. Exten- 

 sively cultivated, but scarcely naturalized, at least in the low country. — 

 Stems \°-2° high. Leaves usually marked with a pale 3-angled spot abf)ve. 



2. T. arvense, L. (R.^hrit-foot Clover.) Softly pubescent; stems 

 erect; leaflets linear-oblong, minutely 3-toothed ; heads oblong; calyx teeth 

 setaceous, plumose ; corolla white, with a purple spot on the wings. — Old 

 fields, chiefly in the upper districts. Introduced, (l) — Stems 8' -12' 

 high. 



