This group consists of leaves that normally grow near the bottom of the stalk. Leaves of the X group usually have a high degree of maturity and show ground injury.
| Grades | Grade names and specifications |
|---|---|
| X1L | Choice Light-brown Lugs. |
| Thin, ripe, firm, oily, normal strength, clear finish, moderate color intensity, 95 percent uniform, and 5 percent injury tolerance. | |
| X2L | Fine Light-brown Lugs. |
| Thin, ripe, firm, oily, normal strength, clear finish, moderate color intensity, 90 percent uniform, and 10 percent injury tolerance. | |
| X3L | Good Light-brown Lugs. |
| Thin, ripe, firm, oily, normal dull finish, pale color intensity, 80 percent uniform, and 20 percent injury tolerance. | |
| X4L | Fair Light-brown Lugs. |
| Thin, mature, open, lean in oil, weak, dull finish, pale color intensity, 70 percent uniform, and 30 percent injury tolerance. | |
| X5L | Low Light-brown Lugs. |
| Thin, mature, open, lean in oil, weak, dull finish, pale color intensity, 60 percent uniform, and 40 percent injury tolerance. | |
| X1F | Choice Medium-brown Lugs. |
| Medium body, ripe, firm, oily, normal strength, clear finish, moderate color intensity, 95 percent uniform, and 5 percent injury tolerance. | |
| X2F | Fine Medium-brown Lugs. |
| Medium body, ripe, firm, oily, normal strength, clear finish, moderate color intensity, 90 percent uniform, and 10 percent injury tolerance. | |
| X3F | Good Medium-brown Lugs. Medium body, ripe, firm, lean in oil, weak, dull finish, pale color intensity, 80 percent uniform, and 20 percent injury tolerance. |
| X4F | Fair Medium-brown Lugs. |
| Thin to medium body, mature, open, lean in oil, weak, dull finish, pale color intensity, 70 percent uniform, and 30 percent injury tolerance. | |
| X5F | Low Medium-brown Lugs. |
| Thin to medium body, mature, open, lean in oil, weak, dull finish, pale color intensity, 60 percent uniform, and 40 percent injury tolerance. | |
| X1D | Choice Dark-brown Lugs. |
| Medium to heavy body, ripe, firm, oily, normal strength, clear finish, moderate color intensity, 95 percent uniform, and 5 percent injury tolerance. | |
| X2D | Fine Dark-brown Lugs. |
| Medium to heavy body, ripe, firm, oily, normal strength, clear finish, moderate color intensity, 90 percent uniform, and 10 percent injury tolerance. | |
| X3D | Good Dark-brown Lugs. |
| Medium to heavy body, ripe, firm, lean in oil, weak, dull finish, pale color intensity, 80 percent uniform, and 20 percent injury tolerance. | |
| X4D | Fair Dark-brown Lugs. |
| Medium to heavy body, mature, open, lean in oil, weak, dull finish, pale color intensity, 70 percent uniform, and 30 percent injury tolerance. | |
| X5D | Low Dark-brown Lugs. |
| Thin to heavy, mature, open, lean in oil, weak, dull finish, pale color intensity, 60 percent uniform, and 40 percent injury tolerance. | |
| X3M | Good Mixed Color or Variegated Lugs. |
| Thin to heavy, ripe, firm, lean in oil, weak, dull finish, 80 percent uniform, and 20 percent injury tolerance. | |
| X4M | Fair Mixed Color or Variegated Lugs. |
| Thin to heavy, mature, close, lean in oil, weak, dull finish, 70 percent uniform, and 30 percent injury tolerance. | |
| X5M | Low Mixed Color or Variegated Lugs. |
| Thin to heavy, mature, close, lean in oil, weak, dull finish, 60 percent uniform, and 40 percent injury tolerance. | |
| X3VF | Good Greenish Medium-brown Lugs. |
| Medium body, mature, firm, lean in oil, weak, dull finish, 80 percent uniform, and 20 percent injury tolerance. | |
| X4VF | Fair Greenish Medium-brown Lugs. |
| Thin to medium body, mature, close, lean in oil, weak, dull finish, 70 percent uniform, and 30 percent injury tolerance. | |
| X5VF | Low Greenish Medium-brown Lugs. |
| Thin to medium body, mature, close, lean in oil, weak, dull finish, 60 percent uniform, and 40 percent injury tolerance. | |
| X3G | Good Green Lugs. |
| Medium to heavy body, mature, firm, weak, lean in oil, dull finish, 80 percent uniform, and 20 percent injury tolerance. | |
| X4G | Fair Green Lugs. |
| Thin to medium body, immature, close, lean in oil, weak, dull finish, 70 percent uniform, and 30 percent injury tolerance. | |
| X5G | Low Green Lugs. |
| Thin to medium body, immature, close, lean in oil, weak, dull finish, 60 percent uniform, and 40 percent injury tolerance. |
[37 FR 13626, July 12, 1972, as amended at 49 FR 16757, Apr. 20, 1984; 51 FR 40407, Nov. 7, 1986]