ROSE

(Rosa), a very variable genus, including several indigenous species (e.g. Rosa can in a). The stem is thorny, the thorns representing hooked outgrowths of the epidermis, which, in the case of ‘rambler’ r’s at least, enable the shoots to attain a more favorable position than they otherwise would do. The fruit or hip consists of a hollow fleshy receptacle containing a number of hairy nutlets.