Manchurian Elm
| Ulmus laciniata | |
|---|---|
 |
|
| Ulmus laciniata leaves | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Ulmaceae |
| Genus: | Ulmus |
| Species: | U. laciniata |
| Binomial name | |
|
Ulmus laciniata (Trautv.) Mayr |
|
| Synonyms | |
|
|
Ulmus laciniata (Trautv.) Mayr, known variously as the Manchurian, cut-leaf, or lobed elm, is a deciduous tree native to the humid ravine forests of Japan, Korea, northern China, eastern Siberia and Sakhalin, growing alongside Cerciphyllum japonicum, Aesculus turbinata, and Pterocarya rhoifolia, at elevations of 700–2200 m, though sometimes lower in more northern latitudes, notably in Hokkaido.
The tree is similar to the Wych elm Ulmus glabra, and was originally treated as such by Houtzagers and Henry, but later accorded species status of its own largely by reason of the enormous disjunction in their respective areas; U. glabra extending across Europe as far as the Urals, several thousand kilometres from U. laciniata in the Far East.
Ulmus laciniata is chiefly distinguished by its leaves, often regularly incised to form between three and seven apical lobes, giving rise to its common name, the cut-leaf elm. [4] The tree can reach a height of 27 m, although the trunk rarely exceeds 0.5 m d.b.h. The bark is dark, grey-brown and exfoliates in flakes. The unwinged branchlets bear laciniate leaves usually obtriangular, < 18 cm in length. The perfect wind-pollinated apetalous flowers are produced on second-year shoots in April (March in England), followed in May by elliptic < 20 × 14 mm samarae lightly-notched at the apex. Growth is moderate; the trunk of one specimen planted on permanently damp, fertile soil in south Hampshire, UK, increased in diameter at breast height (d.b.h.) by a modest average of 1.7 cm per annum.
...
Wikipedia