Planera

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.[1]
Natural range of the water elm

Planera is a genus of flowering plants with a single species, Planera aquatica,^[1] the planertree^[2] or water elm. Found in the southeastern United States,it is 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 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.^[3]

References

1. "Search results for Planera". The Plant List. Retrieved 1 March 2016.
2. "Planera aquatica". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 7 October 2015.
3. "Water Elm Ulmaceae Planera aquatica J.F. Gmel.". Virginia Tech Department of Forestry and Environmental Conservation. Retrieved December 15, 2014.