The [Wolf Creek Ravine Natural Area] plant community is severely degraded by other invasive species, especially Himalayan blackberry (Rubus bifrons) and ivy (Hedera helix).
He sayde vnto the: Haue ye not reed what David did whe he was anhougered and they also which were with him? Matthew 12:3 TYN
Rubus bifrons (Wikipedia) Rubus bifrons is a species of blackberry in the rose family, native to central Europe.