This group consists of leaves that normally grow on the lower portions of the stalk. Leaves of the X group usually have a high degree of maturity and show ground and other injury characteristic of the group.
| Grades | Grade names, minimum specifications, and tolerances |
|---|---|
| X1L | Choice Quality Light-brown Lugs. |
| Ripe, thin, open leaf structure, smooth, oily, clear finish, deep color intensity, semielastic, normal width, 90 percent uniform, and 10 percent injury tolerance. | |
| X2L | Fine Quality Light-brown Lugs. |
| Ripe, thin, open leaf structure, smooth, oily, clear finish, deep color intensity, semielastic, normal width, 85 percent uniform, and 15 percent injury tolerance. | |
| X3L | Good Quality Light-brown Lugs. |
| Mature, thin, firm leaf structure, crepy, lean in oil, normal finish, moderate color intensity, inelastic, narrow, 80 percent uniform, and 20 percent injury tolerance. | |
| X4L | Fair Quality Light-brown Lugs. |
| Mature, thin, close leaf structure, rough, lean in oil, dull finish, pale color intensity, inelastic, narrow, 70 percent uniform, and 30 percent injury tolerance. | |
| X5L | Low Quality Light-brown Lugs. |
| Underripe, thin, close leaf structure, rough, lean in oil, dull finish, pale color intensity, inelastic, narrow, 60 percent uniform, and 40 percent injury tolerance. | |
| X1F | Choice Quality Medium-brown Lugs. |
| Ripe, thin, open leaf structure, smooth, oily, clear finish, deep color intensity, semielastic, normal width, 90 percent uniform, and 10 percent injury tolerance. | |
| X2F | Fine Quality Medium-brown Lugs. |
| Ripe, thin, open leaf structure, smooth, oily, clear finish, deep color intensity, semielastic, normal width, 85 percent uniform, and 15 percent injury tolerance. | |
| X3F | Good Quality Medium-brown Lugs. |
| Mature, thin, firm leaf structure, crepy, lean in oil, normal finish, moderate color intensity, inelastic, narrow 80 percent uniform, and 20 percent injury tolerance. | |
| X4F | Fair Quality Medium-brown Lugs. |
| Mature, thin, close leaf structure, rough, lean in oil, dull finish, pale color intensity, inelastic, narrow, 70 percent uniform, and 30 percent injury tolerance. | |
| X5F | Low Quality Medium-brown Lugs. |
| Underripe, thin, close leaf structure, rough, lean in oil, dull finish, pale color intensity, inelastic, narrow, 60 percent uniform, and 40 percent injury tolerance. | |
| X1R | Choice Quality Reddish-brown Lugs. |
| Ripe, medium body, open leaf structure, smooth, oily, clear finish, deep color intensity, semielastic, normal width, 90 percent uniform, and 10 percent injury tolerance. | |
| X2R | Fine Quality Reddish-brown Lugs. |
| Ripe, medium body, open leaf structure, smooth, oily, clear finish, deep color intensity, semielastic, normal width, 85 percent uniform, and 15 percent injury tolerance. | |
| X3R | Good Quality Reddish-brown Lugs. |
| Mature, medium body, firm leaf structure, crepy, lean in oil, normal finish, moderate color intensity, inelastic, narrow, 80 percent uniform, and 20 percent injury tolerance. | |
| X4R | Fair Quality Reddish-brown Lugs. |
| Mature, thin, close leaf structure, rough, lean in oil, dull finish, pale color intensity, inelastic, narrow, 70 percent uniform, and 30 percent injury tolerance. | |
| X5R | Low Quality Reddish-brown Lugs. |
| Underripe, thin, close leaf structure, rough, lean in oil, dull finish, pale color intensity, inelastic, narrow, 60 percent uniform, and 40 percent injury tolerance. | |
| X3D | Good Quality Dark-brown Lugs. |
| Mature, medium body, firm leaf structure, crepy, lean in oil, normal finish, moderate color intensity, inelastic, narrow, 80 percent uniform, and 20 percent injury tolerance. | |
| X4D | Fair Quality Dark-brown Lugs. |
| Mature, thin, close leaf structure, rough, lean in oil, dull finish, pale color intensity, inelastic, narrow, 70 percent uniform, and 30 percent injury tolerance. | |
| X5D | Low Quality Dark-brown Lugs. |
| Underripe, thin, close leaf structure, rough, lean in oil, dull finish, pale color intensity, inelastic, narrow, 60 percent uniform, and 40 percent injury tolerance. | |
| X3M | Good Quality Mixed Lugs. |
| Mature, thin, firm leaf structure, crepy, lean in oil, normal finish, moderate color intensity, inelastic, narrow, 80 percent uniform, and 20 percent injury tolerance. | |
| X4M | Fair Quality Mixed Lugs. |
| Mature, thin, close leaf structure, rough, lean in oil, dull finish, pale color intensity, inelastic, narrow, 70 percent uniform, and 30 percent injury tolerance. | |
| X5M | Low Quality Mixed Lugs. |
| Underripe, thin, close leaf structure, rough, lean in oil, dull finish, pale color intensity, inelastic, narrow, 60 percent uniform, and 40 percent injury tolerance. | |
| X3G | Good Quality Green Lugs. |
| Underripe, medium body, firm leaf structure, crepy, lean in oil, normal finish, inelastic, narrow, 80 percent uniform, and 20 percent injury tolerance. | |
| X4G | Fair Quality Green Lugs. |
| Immature, thin, close leaf structure, rough, lean in oil, dull finish, inelastic, narrow, 70 percent uniform, and 30 percent injury tolerance. | |
| X5G | Low Quality Green Lugs. |
| Immature, thin, close leaf structure, rough, lean in oil, dull finish, inelastic, narrow, 60 percent uniform, and 40 percent injury tolerance. |
[30 FR 9207, July 23, 1965, as amended at 49 FR 16759, Apr. 20, 1984]