Microscopic features must be confirmed to identify this species. Reports without microscopic details are speculative. Several species of Phragmidium are known from Maryland.
Fruiting body: Distorts young stems with orange pustules; leaves with yellow spots above, orange pustules below. In late summer the orange pustules turn black; leaves may fall early (J. Solem, pers. comm.).
On stems and leaves of wild and domestic roses (Rosa species) (J. Solem, pers. comm.).
There are 23 records in the project database.
| GA | AL | WA | FR | CL | MO | HO | BA | BC | HA | CE | PG | AA | CV | CH | SM | KE | QA | CN | TA | DO | WI | SO | WO |
