Like all raspberry species, rubus neomexicanus
is a woody shrub, producing branched, non-glandular stems largely without prickles, and large green leaves, which are partly divided into three to five main lobes, with irregular, sharp teeth along the edges. The upper leaf surfaces are shiny, and both sides have a covering of very short, soft hairs. Branched veins radiate from the base of the leaf.
Flowers from from the leaf nodes and in little branched clusters at the tips of the stems. At the base of the flower are five green sepals, wide at the base and narrower towards the tip, pointing outwards or curved downwards. The five pure white petals are around one inch long, with rounded tips. The flower center contains several dozen short stamens around a group of even shorter pistils.