682 FABACEAE 
8. MEDICAGO [Tourn.] L. Annual or perennial herbs, or partly woody 
plants. Leaflets 3, pinnate. Racemes capitate or slightly elongate. Calyx- 
r violet: wings with a hooked auricle at the base of the blade. Style very 
short, at pasa oe than the ovary.—About 50 species, natives of the Old 
World.—MED 
Corolla Er or blue: standard with an elliptic or cuneate blade: perennial up- 
ri pla I. SATIVAE. 
Corolla yellow standard with a blade about as broad as long: 
annual spreading or prostrate plants. II. LUPULINAE. 
I. SATIVAE 
pu often bushy branched: flower-clusters conspicuous: pod 
isted. 1. Af. sativa. 
I. L 
rod ee: l-seeded: blade of the keel-petals longer than the 
2. M. lupulina. 
Pod prickle-armed, : several-seeded : blade of the keel-petals shorter 
an 
Stem and branches downy-villous: stipules entire or toothed. 3. M. minima. 
Stem and dee glabrous or nearly so: stipules incised. 
Pod loosely coiled, not furrowed on the edge between the 
prickles: style Der. short 4. M. hispida. 
Pod tightly coiled, furrowed on the edge between the 
prickles : style slender 5. M. arabica. 
1. t L. Leaflets 8-16 mm. TEN blades cuneate-obovate to cuneate 
or oblanceolate: calyx 4-6 mm. long: standard 8-10.5 mm. long: pod 3-4 
mm. broad.—(ALFALFA. Lu )—Fie 
nd Can 
-sum —Extensively grown as a fodder. 
2. M. lupulina L. Leaflets 5-15 mm. lon ng; 
blades obovate or rhomboidal: ealyx 1.5-2 
mm. long: 
ndard 1.5-2 mm. long: pod 
2-3 mm. broad; strongly se 
BLACK-MEDIC. HoP-M DIC. )—W aste- 
places and roadsides, various Dor ees, U.S. 
and S Can. Nat. of Eu u.—Spr. -gum.' 
. M. minima L. Leaflets 0.5-1.5 em. long; 
blades bro cal or ngo cuneate, rounde d 
or truncate at the apex, denticulate: ealyx pubescent, 2. 5-3 mm. long; lobes as 
long as the tube or longer: a ellow, 3—4 mm. long: pod closely twisted 
into 4 p 9 eoils, 5-8 mm. br RA di edges armed with toothed prickles.—Road- 
sha waste-places, and cult. grounds, SUM Plain and adj.. provinces, Fla. to 
and N. C. Nat. of Eu.—Spr.- 
4. M. hispida pies ios s 5-15 mm. long; blades cuneate to oval, green: 
ealyx 2.5-3 mm. long: keel- ud mostly shorter than the broad wings: pod 
with 2 or 3 coils, pe 8 mm. broad. [M. denticulata Willd.]—( BUR-CLOVER.)— 
Waste-places, fields, and roadsides, various provinces, Fla. to Tex. and N. S.; 
also Pacific States. Nat. of Burasi sia.—(W. I., Meg., C. A., S. A.) 
5. M. arabica All. Leaflets 10-25 mm. long; blades peel cuneate to 
obovate, usually with a brown spot in center: calyx 2-2.5 lon ae eel- 
petals mostly jou e the wings: pod with 3 or 4 coils "6-9 br oad. 
M. maculata Sibth.]— (SP MEDICK. )—Waste-places, roadsides, “fields, v 
eult. grounds, various provinces, M Fla. to La. and Ñ. B. Nat. of Eu—(8$. A 2) 
