Dark Varieties:
Kentucky-Tennessee air-cured type 35 One-Sucker and type 36 Green River tobacco.
Kentucky-Tennessee fire-cured types 22-23.
Virginia sun-cured type 37.
Virginia fire-cured tobacco type 21.
Grown and air-cured for chewing tobacco and plug.
Also, grown and fire-cured for snuff plug wrappers.
Plants are stalk-cut, left to wilt in the field, and barn dried.
Many varieties are used for both air-curing and fire-curing depending upon the regional curing practices where being grown.
Fire-Curing begins with air-drying for the first few days, then followed by use of hardwood fires for higher-temperature drying.  The curing is performed in ventilated barns with open fires allowing the smoke to come in contact with the tobacco; it is alternated with air curing.  Fire-cured tobacco is light to dark brown in color, medium to heavy in body  and strong in flavor.
Sun-Curing is performed on racks in the sunshine for set daily periods over 4 weeks, depending on the weather.  Sun-cured tobacco looks similar to air-cured tobacco. 

KY 153 One Sucker	KY 157 One Sucker	KY 160 One Sucker	SI KY 160 One Sucker	LN KY 160 One Sucker
KY 165 One Sucker	LN KY 171 One Sucker	IG KY 171 One Sucker	SI KY 171 One Sucker
One Sucker	OS400 One Sucker
Woods Fire-Cured	Sears Special Fire-Cured	Madole Fire-Cured	Brownleaf Fire-Cured	KY 151 Fire-Cured
VA 309 Fire-Cured	VA 310 Fire-Cured	VA 312 Fire-Cured	VA 355 Fire-Cured	VA 359 Fire-Cured
Greenwood Fire-Cured	Lizard Tail Orinoco x Turtlefoot Sun-Cured	VA 409 Sun-Cured	Hastings
KY 190	KT D4	KT D8	TN D 950	DT 508

Type 21. That type of fire-cured tobacco, known as Virginia Fire-cured or Dark-fired, produced principally in the Piedmont and mountain sections of Virginia.

Type 22. That type of Fire-cured tobacco, known as Eastern District Fire-cured, produced principally in a section east of the Tennessee River in southern Kentucky and northern Tennessee.

Type 23. That type of Fire-cured tobacco, known as Western District Fire-cured or Dark-fired, produced principally in a section west of the Tennessee River in Kentucky and extending into Tennessee.

Type 35. 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.  One-Sucker is a common name for Type 35 tobacco and is used in the manufacture of chewing tobacco.

Type 36. That type of air-cured tobacco commonly known as Green River, Green River Air-cured, Dark Air-cured, or Dark Air-cured of the Henderson and Owensboro Districts, and produced principally in the Green River section of Kentucky.  It is of the one-sucker type and is commonly used in the production of chewing tobacco, though to some extent it is used for snuff and smoking tobaccos.

Type 37. 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.