
Ulmus crassifolia
Ulmus crassifolia
Safety & Hazards
The tree flowers about the same time as the ragweeds (Ambrosia species) in southern N. America and its pollen is known to cause or to complicate later summer hayfever[ 379 Title Silvics of North America. Agricultural Handbook No. 654. Publication Author Burns. R.M. & Honkala. B.H. Website http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm Publisher USDA Forest Service; Washington DC. Year 1990 ISBN Description A very comprehensice guide to about 200 species of timber trees of N. America, Hawaii and Puerto Rico. Mainly temperate species, plus a number of tropical species. It is downloadable from the Internet. ].
Botanical Description
Ulmus crassifolia is a deciduous tree with a rounded to narrow crown; it can grow 6 - 27 metres tall. The bole of mature trees can be up around 90cm in diameter[ 270 Title Flora of N. America Publication Author Website http://flora.huh.harvard.edu/fna/ Publisher Year 0 ISBN Description An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses. , 379 Title Silvics of North America. Agricultural Handbook No. 654. Publication Author Burns. R.M. & Honkala. B.H. Website http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm Publisher USDA Forest Service; Washington DC. Year 1990 ISBN Description A very comprehensice guide to about 200 species of timber trees of N. America, Hawaii and Puerto Rico. Mainly temperate species, plus a number of tropical species. It is downloadable from the Internet. ]. This is one of the four species that are harvested commercially for their wood, known collectively as 'rock elm'. The other three species are Ulmus thomasii (which is the actual rock elm), Ulmus alata and Ulmus serotina. The tree is grown as an ornamental shade tree in southern N. America[ 379 Title Silvics of North America. Agricultural Handbook No. 654. Publication Author Burns. R.M. & Honkala. B.H. Website http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm Publisher USDA Forest Service; Washington DC. Year 1990 ISBN Description A very comprehensice guide to about 200 species of timber trees of N. America, Hawaii and Puerto Rico. Mainly temperate species, plus a number of tropical species. It is downloadable from the Internet. ].