| Code | Definition | Number of Accessions |
| ; | MOSTLY IMMUNE, NO UREDINIA, BUT NUMEROUS HYPERSENSITIVE FLECKS PRESENT. | 412 |
| 0 | IMMUNE, NO UREDINIA OR OTHER INDICATIONS OF INFECTION. | 19 |
| 0; | NEARLY IMMUNE, NO UREDINIA BUT A FEW HYPERSENSITIVE FLECKS PRESENT. | 21 |
| 1 | VERY RESISTANT, UREDINIA MINUTE, SURROUNDED BY DISTINCT NECROTIC AREAS. | 127 |
| 2 | MODERATELY RESISTANT, UREDINIA SMALL TO MEDIUM, USUALLY GREEN ISLANDS SURROUNDED BY A DECIDEDLY CHLOROTIC/NECROTIC BORDER. | 345 |
| 3 | MODERATELY SUSCEPTIBLE, UREDINIA MEDIUM SIZE COALESCENCE INFREQUENT, NO NECROSIS, BUT CHLOROTIC AREAS MAY BE PRESENT. | 389 |
| 4 | VERY SUSCEPTIBLE, UREDINIA LARGE AND OFTEN COALESCING, NO NECROSIS BUT CHLOROSIS MAY BE PRESENT. | 13 |
| X | HETEROGENEOUS, UREDINIA VARIABLE, SOMETIMES INCLUDING ALL INFECTION TYPES AND INTERGRADATIONS ON THE SAME LEAF. | 19 |
| Z | ORDERED DISTRIBUTION OF VARIABLE-SIZED UREDINIA WITH LARGER UREDINIA AT THE LEAF TIP. | 20 |