Rule 17
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
Any lot of tobacco which is not green but contains over 30 percent of variegated leaves shall be described as “variegated” and designated by the color symbol “M.” Variegated leaves may be included in any group to the following extent: In the third quality, 10 percent; in the fourth quality, 20 percent; and in the fifth quality, 30 percent.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.