Orobanchaceae (Broom-Rape Family) Synonym(s): Afzelia macrophylla, Seymeria macrophyllaBase Flower Color: YellowReproductive Phenology: Jun, Jul, Aug, Sept, OctBloom Notes: Partially parasitic on roots of some angiosperm tree species, notably oaks, maples, elms, and buckeyes. For more information about this plant, Click Here.