Class	Scientific Name	Common Name	National Wetland Category	Type
Class #1 - These species are prohibited and should be removed from wetland mitigation areas. Long range wetland mitigation management plans must also provide for the ongoing removal of plants in this class.
1	Alnus glutinosa	black alder	Facultative Wetland	Tree
1	Rhamnus cathartica	common / european buckthorn	Facultative Upland	Tree
1	Ulmus pumila	siberian elm	Upland	Tree
Class #2 - These species are prohibited but are not required to be removed from wetland mitigation areas.
2	Acer platanoides	norway maple	Upland	Tree
2	Ailanthus altissima	tree-of-heaven	Upland	Tree
2	Elaeagnus angustifolia	russian olive	Facultative Upland (-)	Tree
2	Morus alba	russian mulberry, white mulberry	Facultative	Tree
2	Populus alba	white poplar, silver poplar	Upland	Tree
2	Populus nigra var. italica	lombardy poplar	Upland	Tree
2	Robinia pseudoacacia	black locust	Facultative Upland (-)	Tree
2	Robinia viscosa	clammy locust	Upland	Tree
2	Salix alba	white willow	Facultative Wetland	Tree
2	Salix babylonica	weeping willow	Facultative Wetland	Tree
2	Salix cinerea	gray willow	Upland	Tree
2	Salix fragilis	crack willow	Facultative (+)	Tree
2	Salix matsudana	corkscrew willow	Facultative	Tree
2	Salix pentandra	laurel (bayleaved) willow	Upland	Tree
Class #3 - These species are not recommended but can be planted under controlled circumstances provided the following criteria are met: 1) The planting area is not in or adjacent to a wetland, natural feature open space, natural area, or park. 2) Alternative species have been considered and shown to be unsuitable. 3) The property owner demonstrates an understanding of the method of dispersal of the species, and agrees to be responsible for implementing the control and eradication of the plant if it does spread. 4) The property owner agrees to eradicate the plant(s) prior to transferring the property to another owner.
3	Ulmus parvifolia	chinese elm	Facultative	Tree
Class # 4- These species may only be planted in areas that will be mowed on a regular basis to prevent the plants from reseeding, and can only be planted outside of wetland areas, natural feature open space, or other natural areas.
4

These native species are NOT included on the invasive species list. However they are not recommended for planting since they are aggressive in disturbed areas.
	Acer negundo	boxelder	Facultative Wetland (-)	Tree