Misc: What does mel blanc's headstone say?

Questions

Common name for a small family of woody flowering plants, & for certain trees of its representative genera?

Common name for a small thorny tree (rue), & for its fruit?

Common name for a species of bear, similar in size to a large cat, with thick, reddish-brown fur?

Common name for about 19 species of annual herbs, of the grass family (grasses)?

Common name for about 200 species of algae belonging to the phylum charophyta of the plant kingdom?