Planera aquatica

Water elm
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Rosales
Family:	Ulmaceae
Genus:	Planera J.F.Gmel.
Species:	P. aquatica
Binomial name
Planera aquatica J.F.Gmel.
Natural range of the water elm

Planera aquatica, the planertree^[1] or water elm, is a single species in the southeastern United States, a small deciduous tree 10–15 m tall, closely related to the elms but with a softly, prickly nut 10–15 mm diameter, instead of a winged seed. It is the sole species in the genus Planera. It grows, as the name suggests, on wet sites. The leaves are 3–7 cm long, with a serrated margin. Despite its common English name, this species is not a true elm, although it is a close relative of the elms (species of the genus Ulmus). It is also subject to Dutch Elm Disease, a disease which affects only members of the Ulmaceae. It is native to most of the southeast United States. It is hardy down to Zone 7.^[2]

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