a European common weed (Erodium cicutarium) of the geranium family, which is now utilized as fodder in the SW U.S.
See alfilaria in American Heritage Dictionary 4
or al·fil·e·ri·a(ăl-fĭlˌə-rēˈə)
noun
An annual Mediterranean plant (Erodium cicutarium) having pinnately dissected leaves and small pink or purple flowers. It is a widespread weed and is used for spring forage in the western United States. Also called filaree, pin clover.