Any leaf of which 20 percent or more of its leaf surface is off brown, grayish, mottled, or bleached and does not blend with the normal colors of the type. (See Rules 17, § 29.3618; 18, § 29.3619.)

[30 FR 9207, July 23, 1965. Redesignated at 49 FR 16759, Apr. 20, 1984]