Elm, genus of about 35 species of forest and ornamental shade trees, native primarily to north temperate areas. Many are cultivated for their height and attractive foliage. Elm wood is used in constructing boats and farm buildings because it is durable underwater; its is also used for furniture.
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The genus is hermaphroditic, having apetalous perfect flowers which are wind-pollinated. Elm leaves are alternate, with simple, single- or, most commonly, doubly serrate margins, usually asymmetric at the base and acuminate at the apex. The fruit is a round wind-dispersed samara flushed with chlorophyll, facilitating photosynthesis before the leaves emerge. [3] The samarae are very light ...
Elm has its own virtual DOM implementation, designed for simplicity and speed. All values are immutable in Elm, and the benchmarks show that this helps us generate particularly fast JavaScript code.
Diseases & Pests: Dutch elm disease, elm yellows, elm phloem necrosis, elm bark beetle, elm leaf beetles, elm leaf miner and verticillium wilt. 3. Rock Elm (Ulmus thomasii) Rock elm is a rare tree that can grow up 100 ft and may live for up to 300 years. The leaves are shiny dark green on the upper side and light green on the underside.