| Code | Definition | Number of Accessions |
| 1 | No pubescence found on any internodes with the exception of a few hairs immediately below the flowering head. Any hair that is observed will be very fine and adnate to the stem. | 2 |
| 2 | No pubescence on the lower internodes. A few hairs may occur on the second internode from the flower. | 5 |
| 3 | No pubescence on the lower internodes. Dense pubescence on the first internode and some hairs on the second internode. | 15 |
| 4 | No pubescence on the lower internodes. A few hairs will be seen on the third internode. | 13 |
| 5 | No pubescence on the first two internodes above the crown. Dense pubescence on the first, second and third internodes below the flower. | 32 |
| 6 | No pubescence on the first two internodes above the crown. Dense pubescence on the first, second and third internodes from the flower and sparse pubescence on the fourth internode from the flower. | 24 |
| 7 | Pubescence found along the entire stem. Density of the pubescence from the flower to the crown will gradually decrease from very dense at the first internode to a few hairs on the first internode from the flower. | 22 |
| 8 | Increased density of hair along the entire length of the stem. | 32 |
| 9 | Very dense pubescence throughout the entire length of the stem. | 3 |