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Mailing Standards of the United States Postal Service, International Mail Manual >
5 Nonpostal Export Regulations > 590 Exporting Wildlife and Protected Plants > 595 Permit Requirements for Wildlife and Plant Exports
Permits are required to export any of the following by mail or other means:
CITES–listed herbarium specimens; other preserved, dried, or embedded museum specimens; and live plant material may be exported as a noncommercial loan, donation, or exchange between registered scientists or registered scientific institutions using a CITES–authorized label instead of an export permit.