As per efi thread :
Lippia: Spreading shrubs, hairs simple. spikes elongate, style sublateral, fruit wall thin, corolla tube much protruding
Lanatana: Spreading Shrubs, hairs simple, Spikes dense, style sublateral, fruit wall fleshy, corolla tube not protruding much
Phyla: Prostrate herbs, hairs medifixed, spikes dense, style terminal, fruit wall thin, corolla tube not protruding much.
Lantana may easily be distinguished by its stem and leaves being harshly pubescent