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United States Law: It is illegal to import or transport Caulerpa taxifolia aquarium strain across state lines including internet sale (Federal Noxious Weed Act, 1999; and Federal Plant Protection Act, 2000).

California State Law: It is illegal to possess, transport, transfer, release alive, import, or sell Caulerpa taxifolia, Caulerpa sertularioides, Caulerpa mexicana, Caulerpa ashmeadii, Caulerpa scalpelliformis, Caulerpa racemosa (and all varieties of C. racemosa), Caulerpa cupressoides, Caulerpa verticillata, Caulerpa floridana (California Fish and Game Code 2300).

City of San Diego Law: Bans the possession, sale, and transport of all Caulerpa species within city limits (City of San Diego Ordinance 18967).

We designed this key to distinguish between Caulerpa species commonly found in the aquarium trade. Many Caulerpa species found in the wild were not included in this publication.

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