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 has also become naturalized in parts of the United States (especially California), Australia, and southern South America.
Description
Rubus ulmifolius is a brambly shrub sometimes as much as 5 meters (almost 17 feet) tall, sometimes with spines but not always. Leaves are palmately compound with 3 or 5 leaflets, the leaflets green on the upper surface but white on the underside because of a dense layer of woolly hairs. Flowers are usually pink, sometimes white. The fruit is a compound drupe, dark purple, almost black.[2]
^Troncoso, N. S. 1987. Piperaceae, Polygonaceae (Coccoloba, Muehlenbeckia, Ruprechtia, Emex), Aizoaceae, Molluginaceae, Basellaceae, Berberidaceae, Annonaceae, Menispermaceae, Capparaceae, Rosaceae. 3: 2–6,. In A. E. Burkart (ed.) Flora Ilustrada de Entre Ríos (Argentina). Instituto Nacional de Tecnología Agropecuaria, Buenos Aires
^Marticorena, C. & M. Quezada. 1985. Catálogo de la Flora Vascular de Chile. Gayana, Botánica 42: 1–157
