User:Cgs/Temp/Elm

Elm is also a text-based E-mail client. See Elm (email client).

Elm
Scientific classification
Kingdom: Plantae Division: Magnoliophyta Class: Magnoliopsida Order: Urticales Family: Ulmaceae Genus: Ulmus
Species
Ulmus alata - winged elm   Ulmus americana - American elm   Ulmus crassifolia - cedar elm   Ulmus glabra - Scotch elm   Ulmus parvifolia - Chinese elm   Ulmus procera - English elm   Ulmus pumila - Siberian elm   Ulmus rubra - slippery elm (red elm)   Ulmus thomasii - rock elm

Elms are trees of the Genus Ulmus, Family Ulmaceae. They have alternate, simple, doubly-serrate leaves, usually with uneven bases. The fruit is a round samara.

Dutch elm disease has been devastating to elms throughout the Northern Hemisphere. This is a fungal disease that is borne by a vector, the elm-bark beetle. It affects all species of elm native to North America and Europe to some degree.

Woodland trees in North America are not quite as susceptible to the disease because they usually lack the root-grafting of the urban elms and are somewhat more isolated from each other.

Species of elm are:

• Ulmus alata -- winged elm
• Ulmus americana -- American elm
• Ulmus rubra -- slippery elm (or red elm)
• Ulmus serotina -- September elm
• Ulmas thomasii -- rock elm
• Ulmus pumila -- Siberian elm
• Ulmus glabra -- Scotch elm
• Ulmus procera -- English elm

Another important genus in the Ulmaceae is the genus Celtis, or hackberry.