[FONT=Arial, sans-serif]I think the single most characteristic of a Burley tobacco would be the lack of sucroester or sugar in the leaf. many Burley's have zero sucroester.
Class 3*.Air-cured types. [/FONT]
[FONT=Arial, sans-serif]*Class 3 covers Air-cured tobacco other than cigar leaf. This class may be subdivided as follows: Class 3a, Light Air-cured tobacco, including types 31 and 32, and Class 3b, Dark Air-cured tobacco, including types 35, 36, and 37.
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[FONT=Arial, sans-serif]Class 3; air-cured types and groups.[/FONT][FONT=Arial, sans-serif]
(a) [/FONT][FONT=Arial, sans-serif]Type 31. [/FONT][FONT=Arial, sans-serif]That type of air-cured tobacco, commonly known as Burley, produced principally in Kentucky, Tennessee, Virginia, North Carolina, Ohio, Indiana, West Virginia, and Missouri.
(b) [/FONT][FONT=Arial, sans-serif]Type 31–V. [/FONT][FONT=Arial, sans-serif]Notwithstanding the definitions of “Type” and “Type 31”, any tobacco having the general visual characteristics of quality, color, and length of Class 3, Type 31, air-cured tobacco, but which is a low-nicotine strain or variety, [/FONT]
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(2) [/FONT][FONT=Arial, sans-serif]Production under contract. [/FONT][FONT=Arial, sans-serif]Type 31–V tobacco shall be grown under contract with a dealer in tobacco or a manufacturer of tobacco products. In addition to any other provisions not inconsistent herewith, the contract shall provide that:[/FONT]
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(d) [/FONT][FONT=Arial, sans-serif]Type 32. [/FONT][FONT=Arial, sans-serif]That type of air-cured tobacco commonly known as Southern Maryland tobacco or Maryland Air-cured, and produced principally in southern Maryland. (Upper Country Maryland is classed as “miscellaneous domestic.”)[/FONT]
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(e) [/FONT][FONT=Arial, sans-serif]Type 35. [/FONT][FONT=Arial, sans-serif]That type of air-cured tobacco commonly known as One Sucker Air-cured, Kentucky-Tennessee-Indiana One Sucker, or Dark Air-cured One Sucker, including the upper Cumberland District One Sucker, and produced principally in northern Tennessee, south central Kentucky, and southern Indiana.[/FONT]
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(f) [/FONT][FONT=Arial, sans-serif]Type 36. [/FONT][FONT=Arial, sans-serif]That type of air-cured tobacco commonly known as Green River, Green River Air-cured, or Dark Air-cured of the Henderson and Owensboro Districts, and produced principally in the Green River section of Kentucky.[/FONT]
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(g) [/FONT][FONT=Arial, sans-serif]Type 37. [/FONT][FONT=Arial, sans-serif]That type of air-cured or sun-cured tobacco commonly known as Virginia Sun-cured, Virginia Sun and Air-cured, or Dark Air-cured of Virginia, and produced principally in the central section of Virginia north of the James River. [/FONT]