Lippia

Lippia alba (Mill.) N.E.Br. ex Britton & P.Wilson (Introduced) (Trop. & Subtrop. America: Argentina Northeast, Argentina Northwest, Bahamas, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Cayman Is., Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Florida, French Guiana, Guatemala, Guyana, Haiti, Honduras, Jamaica, Leeward Is., Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá, Paraguay, Peru, Puerto Rico, Southwest Caribbean, Suriname, Texas, Trinidad-Tobago, Turks-Caicos Is., Uruguay, Venezuela, Venezuelan Antilles, Windward Is.; Introduced into: Andaman Is., Assam, Bangladesh, Central American Pac, India, Portugal, Queensland per POWO)

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BSI Flora of India Checklist (Distribution):
Lippia alba (Mill.) N.E. Br. ex Britton & P. Wilson (Andaman & Nicobar Islands, Andhra Pradesh. Arunachal Pradesh, Assam, Bihar, Chhatttishgarh, Gujarat, Karnataka, Kerala, Meghalaya, Odisha, Tamil Nadu, Uttar Pradesh, West Bengal)
Lippia javanica (Burm.f.) Spreng. (Arunachal Pradesh (?), Chhattisgarh (?), Kerala, Tamil Nadu, Telangana)

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Flora of Peninsular India with keys at species links, if any:
Lippia alba
Lippia citriodora (syn. of Aloysia citrodora Paláu)
Lippia javanica

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As per efi thread :
Lippia: Spreading shrubs, hairs simple. spikes elongate, style sub lateral, fruit wall thin, corolla tube much protruding
Lantana: Spreading Shrubs, hairs simple, Spikes dense,  style sub lateral, 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
Lippia alba (Mill.) N. E. Br. and L. javanica are two different species though often confused, especially our Bengal specimens. Lippia gemminata Kunth is a synonym of L. alba

Material of Lippia alba is often confused with Lantana indica, and can be conclusively differentiated on the basis of fruit being fleshy in Lantana indica and dry in Lippia alba.