A rose is a flowering shrub of the genus Rosa, and the flower of this shrub. There are more than a hundred species of wild roses, all from the northern hemisphere and mostly from temperate regions. The species form a group of generally prickly shrubs or climbers, and sometimes trailing plants, reaching 2–5 m tall, rarely reaching as high as 20 m by climbing over other plants.
The name originates from Latin rosa, borrowed through Oscan from colonial Greek in southern Italy: rhodon (Aeolic form: wrodon), from Aramaic wurrd?, from Assyrian wurtinnu, from Old Iranian *warda (cf. Avestan warda, Sogdian ward, Parthian wâr). Source: Wikipedia.