Rubus nelsonii

Rubus nelsonii is an uncommon Mexican species of brambles in the rose family. It has been found only in the State of Oaxaca in southern Mexico.
"Rubus nelsonii" is a perennial with stems up to 4 meters long, reclining on walls, rocks, or other vegetation. Stems are purple, hairy and with relatively few, weak curved prickles. Leaves are compound with 3 or 5 leaflets. Flowers are white. Fruits are dark purple.