162 FABACEAE. 



lip and a minutely 3-lobed lower lip. Corolla mostly yellow: standard with a 

 broad blade: wings with aeutish auricles: keel-petals with broad blades. Pods 

 rather narrow. — Broom. 



1. C. scoparius (L.) Link. Plants with many stiff erect sharp-angled branches, 

 1-1.5 m. tall, the younger parts finely pubescent : leaflets 3, or 1 in the upper 

 leaves; blades obovate to oblong, 5-15 mm. long, obtuse or acute, entire: 

 racemes leafy-bracted : calyx about 4 mm. long: corolla bright-yellow; standard 

 suborbicular, 1.5-2 cm. long: pods broadly linear, 4-5 cm. long, long-ciliate. 

 — E. Bather rare, on railroad embankments and in fields. Nat. of Eu. — 

 Sum. — Scotch-broom. 



5. MEDICAGO [Tourn.] L. Annual or perennial herbs, or partially 

 woody plants. Leaflets 3, pinnate. Eacemes capitate or slightly elongate. 

 Calyx-lobes nearly equal, about as long as the tube or longer. Corolla yellow, 

 blue, or violet: wings with a hooked auricle at the base of the blade. Style 

 very short, at least shorter than the ovary. — Medic. 



Corolla violet or blue; standard with an oblong or cuneate blade: perennial upright 



plant. 1- M. sativa. 



Corolla yellow ; standard with a blade about as wide as long : 



annual prostrate plant. 2. M. lupulina. 



1. M. sativa L. Leaflets 8-16 mm. long; blades euneate-obovate to cuneate 

 or oblanceolate : calyx 4-6 mm. long: standard 8-10.5 mm. long: pods 3-4 mm. 

 broad. — Eather common, in fields and waste places. Nat. of Eu. — Spr. and 

 sum. — Alfalfa. Lucerne. 



2. M. lupulina L. Leaflets 5-15 mm. long; blades obovate or rhomboidal: 

 calyx 1.5-2 mm. long: standard 1.5-2 mm. long: pods 2-3 mm. broad. — Com- 

 mon, in waste places and on roadsides. Nat. of Eu. — Sum. — Nonesuch. 

 Black-medic. Hop-medic. 



6. MELILOTUS [Tourn.] Juss. Annual or biennial herbs. Leaflets 3, 

 pinnate. Eacemes greatly elongate and ultimately interrupted. Calyx-lobes 

 nearly equal, shorter than the tube. Corolla yellow or white: wings with a 

 slender auricle at the base of the blade. Style long. — Sum. — Sweet-clover. 

 Melilot. 



Corolla yellow : standard shorter than the wing-petals. 1. M. ofpcinalis. 



Corolla "white : standard surpassing the wing-petals. 2. M. alba. 



1. M, officinalis (L.) Lam. Leaflets 1-3 cm. long; blades narrowly oblong, 

 oblanceolate, or oval: racemes 2-12 cm. long: calyx-lobes about A as long as 

 the tube: keel-petals much shorter than the wings: ovary stipitate: pods 

 about 4 mm. long, pubescent. — Eather scarce, in waste places, except in the 

 limestone region. Nat. of Eu. — Yellow-melilot. 



2. M. alba Desv. Leaflets 1-3 cm. long; blades linear-oblong, oblanceolate, 

 or elliptic: racemes fully as long as in M. officinalis: calyx-lobes slightly 

 shorter than the tube: keel-petals slightly shorter than the wings: ovary ses- 

 sile : pods 3-3.5 mm. long, glabrous. — Common, in waste places and river 

 banks. Nat. of Eu. — White-melilot. 



7. TRIFOLIUM [Tourn.] L. Annual or perennial herbs. Leaflets 3, 

 digitate or pinnate, or rarely 5 or 7. Calyx-lobes nearly equal, or the 2 upper 

 longer than the 3 lower ones and sometimes partially united. Corolla variously 

 colored or white: standard oblong or obovate, or elongate and clawed: other 

 petals with long claws, the wings with an angle or a rounded auricle at the 

 base of the blade. — Clover. Trefoil. 



