Rubus ulmifolius is a species of wild blackberry known by the English common name elmleaf blackberry or thornless blackberry and the Spanish common name zarzamora. It is native to Europe and North Africa, and it is widely known elsewhere as an introduced species and sometimes a noxious weed. It is a brambly shrub with compound leaves and small, white or pink flowers. The fruit is a blackberry.
Subspecies include R. ulmifolius subsp. sanctus.
- "The Plant List: A Working List of All Plant Species". Retrieved February 5, 2014.
- GRIN Species Profile
- Pacific Island Ecosystems at Risk
- Media related to Rubus ulmifolius at Wikimedia Commons
- Data related to Rubus ulmifolius at Wikispecies
- USDA Plants Profile
- Photo gallery
- "Jepson eflora".
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