Planera
(named in honour of I. J. Planer, a German botanist, who published a Flora of Erfurt, in 1788). ORD. Urticaceae. A monotypic genus. The species is a hardy, deciduous, unarmed tree, probably not now in cultivation in Britain. It requires culture similar to Ulmus (which see).
P. aquatica (aquatic). Planer-tree. fl. brown, clustered; perianth four or five-fid. March and April. fr. nut-like, oblique, ovate, compressed, wingless. l. 1in. to 1 1/2in. long, alternate, distichous, shortly stalked, serrated, ovate, acute, roughish, penniveined; stipules free, caducous. h. 20ft. to 30ft. Southern United States, 1816. SYN. P. Gmelini. P. Gmelini (Gmelin's). A synonym of P. aquatica.