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Planera (after J. J. Planer, 1743-1789, professor of medicine at Erfurt; author of several books on botany). Urticaceae. Water-Elm. Monotypic genus, allied to Ulmus and Celtis: lvs. pinnately veined, alternate: fls. polygamous, with deeply 4-5-lobed calyx: staminate fls. short-stalked, in clusters at the base of the young branchlets, with 4-5 stamens; pistillate or perfect ones on rather slender stalks, 1—3 in the axils of the lower lvs.: fr. a small muricate nut. The only species is P. aquatica, Gmel. (Anonymus aquaticus, Walt. P. ulmifolia, Michx.). Small tree, sometimes to 40 ft.: lvs. short-petioled, somewhat unequal at the base, ovate to ovate-oblong, unequally serrate, glabrous at length and somewhat leathery, 1 1/2-2 1/2in. long: fr. oval,1/3in. long, with irregularly crested fleshy ribs. April, May. S. 111. and Ky. to Fla. and Texas. S.S. 7:316. R.H. 1903, p. 351. This tree is not in general cult, and has little to recommend it as an ornamental plant. It would not prove hardy N. It probably thrives best in moist soil and is prop, by seeds sown soon after ripening in May and by layers, also by grafting on elm. The plants sometimes cult, under the name of P. aquatica belong either to Ulmus campestris var. viminalis, U. parvifOlia, or U. alata, to which the true Planera is similar in foliage, or to some other small- lvd. elm.

Planera (after J. J. Planer, 1743-1789, professor of medicine at Erfurt; author of several books on botany). Urticaceae. Water-Elm. Monotypic genus, allied to Ulmus and Celtis: lvs. pinnately veined, alternate: fls. polygamous, with deeply 4-5-lobed calyx: staminate fls. short-stalked, in clusters at the base of the young branchlets, with 4-5 stamens; pistillate or perfect ones on rather slender stalks, 1—3 in the axils of the lower lvs.: fr. a small muricate nut. The only species is P. aquatica, Gmel. (Anonymus aquaticus, Walt. P. ulmifolia, Michx.). Small tree, sometimes to 40 ft.: lvs. short-petioled, somewhat unequal at the base, ovate to ovate-oblong, unequally serrate, glabrous at length and somewhat leathery, 1 1/2-2 1/2in. long: fr. oval,1/3in. long, with irregularly crested fleshy ribs. April, May. S. 111. and Ky. to Fla. and Texas. S.S. 7:316. R.H. 1903, p. 351. This tree is not in general cult, and has little to recommend it as an ornamental plant. It would not prove hardy N. It probably thrives best in moist soil and is prop, by seeds sown soon after ripening in May and by layers, also by grafting on elm. The plants sometimes cult, under the name of P. aquatica belong either to Ulmus campestris var. viminalis, U. parvifOlia, or U. alata, to which the true Planera is similar in foliage, or to some other small- lvd. elm.

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==Species==

==Species==

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*P. acuminata, Lindl.=Zelkova serrata.{{SCH}}

*P. Keakii, C. Koch=Zelkova serrata.{{SCH}}

*P. repens, Hort.=Ulmus pumila or parvifolia.{{SCH}}

*P. Richardi, Michx.=Zelkova ulmoide{{SCH}}

==Gallery==

==Gallery==