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COMMON NAME Tree-of-heaven FULL SCIENTIFIC NAMEAilanthus altissima (Miller) Swingle FAMILY NAME COMMONQuassia family FAMILY SCIENTIFIC NAMESimaroubaceae IMAGES
NOMENCLATURE/SYNONYMSSynonyms: Ailanthus glandulosa Desf. DESCRIPTIONAilanthus altissima is a rapidly growing dioecious tree that can reach over 18.3 m (60 ft.) in height. The leaves are 0.3-0.9 m (1-3 ft.) long . Each leaf is comprised of 11-25 ovate-lanceolate leaflets which are each 7.6-12.7 cm (3-5 in.) long. They are truncate at the base and acute or acuminate at the apex. There are usually one or more coarse teeth at the base of the leaflet, and each of these teeth has a large gland beneath it. The bark of this tree is extremely smooth and pale gray in color. The inflorescence is pyramidal in shape and is 10.0-20.3 cm (4-8 in.) long with greenish to greenish-yellow flowers [5 mm (0.2 in.)] that appear in late spring. The staminate flowers and broken twigs have an unpleasant scent. The fruits are twisted samaras that appear from September to October on the female trees. They are yellow-green to orange-red and changing to brown in the winter, and are 5 cm (2 in.) long. Page References Bailey 611, Fernald 953, Gleason & Cronquist 355, Holmgren 335, Magee & Ahles 697. See reference section below for full citations. SIMILAR SPECIES Rhus typhina L. Picture of R. typhina
REPRODUCTIVE/DISPERSAL MECHANISMSThe primary method of dispersal for Ailanthus altissima is by wind. However, the fruits are also light enough to float and could be moved by water.
DISTRIBUTIONAilanthus altissima is native to central China. In the United States, it is found in all states except Alaska, Idaho, Michigan, Wyoming, Nevada, North Dakota, South Dakota and Minnesota. This tree has been reported in all northeastern states as well as Canada.
HISTORY OF INTRODUCTION IN NEW ENGLANDAilanthus altissima was brought to England from China in 1751. It was then introduced into the United States in Philadelphia, Pennsylvania in 1784 by a gardener named William Hamilton. By 1840 it was being sold by nurseries for its foliage. The first Connecticut record was in 1856. It has been used extensively for plantings in cities because of its rapid growth and resistance to air pollution. It is from these city plantings that this plant has escaped and extended its range not only into New England, but into the majority of the country.
HABITATS IN NEW ENGLANDAbandoned Field,Agricultural Field,Coastal Beach or Dune,Early Successional Forest,Edge,Roadside,Vacant Lot,Yard or GardenAilanthus altissima can be found in a variety of habitats, such as disturbed urban areas, alleys, along sidewalks, along streets, fields, fencerows, woodland edges, forest gaps, and agricultural fields.
THREATSBecause of its rapid growth Ailanthus altissima can easily displace some native vegetation. It also produces toxins that can prevent the establishment of other plant species. The root system of the plant can cause damage to sewers and foundations. When cut down this tree can produce suckers and stump sprouts. A single tree can produce 325,000 wind dispersed seeds a year. The sap of this species may cause myocarditis (inflamation of the heart tissue) if it is internalized (Bisognano et al. 2005). MANAGEMENT LINKS The Connecticut Invasive Plant Working Group Invasive Plant Management Guide Plant Conservation Alliance fact sheet DOCUMENTATION NEEDS Documentation required: Photograph of habit, inflorescence.
ADDITIONAL INFORMATION Integrated Taxonomic Information System PLANTS database Plant Conservation Alliance Virginia Native Plant Society Virginia Department of Conservation and Recreation Virginia Tech Dendrology National Invasive Species Information Center Conservation New England USDA Forest Service
DATA RETRIEVALDataMAPS OF PLANT DISTRIBUTION IN NEW ENGLANDMap
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