¿Puede ser Medicago lupulina?. Hace algún tiempo mandé una similar, pero sin fruto y quedo provisionalmente identificada como M. lupulina.
Esta Medicago está en todo el mundo: Afghanistan (native); Alaska-Aleutian Is (introduced); Albania (native); Algeria (native); Argentina (introduced); Armenia (native); Australia (introduced); Austria (native); Azerbaijan (native); Azores (native); Bahamas (introduced); Balearic Is (native); Belarus (native); Belgium (native); Bolivia (introduced); Brazil (introduced); Bulgaria (native); Canada (introduced); Canary Is (native); Chatham Is (introduced); Chile (introduced); China (native); Colombia (introduced); Corsica (native); Cyprus (native); Czechoslovakia (native); Denmark (native); Dominican Republic (introduced); East Aegean Is(Greek) (native); Egypt (native); Estonia (native); Ethiopia (native); Finland (native); Foroyar (introduced); France (native); Germany (native); Great Britain (native); Greece (native); Gruzia (native); Guatemala (introduced); Haiti (introduced); Hawaii (introduced); Hungary (native); Iceland (introduced); India (native); Iran (native); Iraq (native); Ireland (native); Israel-Jordan (native); Italy (native); Japan (introduced); Kazakhstan (introduced); Kenya (uncertain); Kermadec Is (introduced); Kirgizstan (introduced); Kriti (native); Latvia (native); Lebanon (native); Libya (native); Liechtenstein (native); Lithuania (native); Luxembourg (native); Malta (native); Mauritius (introduced); Mexico(North & Central) (native); Mexico(South East) (native); Moldova (introduced); Mongolia (native); Morocco (native); Nepal (native); Netherlands (native); New Zealand(North) (introduced); New Zealand(South) (introduced); Norway (native); Pakistan (native); Peru (introduced); Philippines (introduced); Poland (native); Portugal (native); Reunion (introduced); Romania (native); Russia in Asia (native); Russia in Europe (native); Sardegna (native); Saudi Arabia (native); Sicilia (native); Somalia (uncertain); South Africa (native); Spain (native); Sweden (native); Switzerland (native); Syria (native); Tadzhikistan (introduced); Taiwan (native); Tanzania (uncertain); Tasmania (introduced); Tunisia (native); Turkey in Asia (native); Turkey in Europe (native); Turkmenistan (introduced); Ukraine (native); United States (introduced); Uzbekistan (introduced); Yemen (native); Yugoslavia (native)