rose | Description, Species, Images, & Facts | Britannica
Physical description. Roses are erect, climbing, or trailing shrubs, the stems of which are usually copiously armed with prickles of various shapes and sizes, commonly called thorns. The leaves are alternate and pinnately compound (i.e., feather-formed), usually with oval leaflets that are sharply toothed. The flowers of wild roses usually have five petals, whereas the flowers of cultivated ...
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