Ulmus thomasii
Rock elm ( Ulmus thomasii )
The Rock Elm (Ulmus thomasii ) is a deciduous tree of the genus of the elms. The distribution area extends across central and eastern North America.
Description
The Rock Elm is a slow growing deciduous tree reaching a height of 30 meters. The branches are often provided with corky wings. The inner bark is lemon yellow. The leaves are 5-11 inches long with slightly asymmetrical base. The upper leaf surface is shiny and smooth and there are a maximum of 21 pairs of nerves formed side. The flowers are in hanging up to 5 centimeters long tufts. Flowering period is March to April. The fruits are hairy and have a thickened and ciliated border.
Distribution and ecology
The natural range of the Rock Elm extends over central and eastern North America from Quebec to South Dakota and south to Tennessee and Missouri. There, they are often found in rocky locations on rocky slopes and in canyons. The best growth it shows on moist, well-drained, loam rich soils in the low and hilly. She is very shade tolerant and often grows in mixed forests with demanding hardwoods such as hickory ( Carya ), ash (Fraxinus ) and maples ( Acer).
System
The Rock Elm (Ulmus thomasii ) is a species in the genus of elm (Ulmus ). There she is assigned to the section Trichoptelea in the subgenus Oreoptelea. A synonym of the species is Ulmus racemosa Thomas.
Use
The wood of the Rock Elm is considered the best elm wood and was used for shipbuilding, the wheelwright and the manufacture of furniture. The species is become limited due to overuse. In Central Europe they are found in botanical gardens.