A Guide to Nonnative Invasive Plants Inventoried in the North by Forest Inventory and Analysis

This field guide is intended to aid Forest Inventory and Analysis (FIA) foresters in identifying 43 plants listed in Appendix I of the FIA Field Guide 4.0 (http://nrs.fs.fed.us/ fia/data-collection/). This document will change as invasive species are added or removed from the list. 

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Contents Tree Species Acer platanoides (Norway maple) Ailanthus altissima (tree-of-heaven) Albizia julibrissin (silktree) Elaeagnus angustifolia (Russian olive) Melaleuca quinquenervia (punktree) Melia azedarach (Chinaberry) Paulownia tomentosa (princesstree) Robinia pseudoacacia (black locust) Tamarix ramosissima (saltcedar) Triadica sebifera (tallow tree) Ulmus pumila (Siberian elm) Woody Species Berberis thunbergii (Japanese barberry) Berberis vulgaris (common barberry) Elaeagnus umbellata (autumn olive) Frangula alnus (glossy buckthorn) Ligustrum vulgare (European privet) Lonicera x.bella (showy fly honeysuckle) Lonicera maackii (Amur honeysuckle) Lonicera morrowii (Morrow’s honeysuckle) Lonicera tatarica (Tatarian honeysuckle) Rhamnus cathartica (common buckthorn) Rosa multiflora (multiflora rose) Spiraea japonica (Japanese meadowsweet) Viburnum opulus (European cranberrybush) Vine Species Celastrus orbiculatus (Asian bittersweet) Cynanchum louiseae (black swallow-wort) Cynanchum rossicum (European swallow-wort) Hedera helix (English ivy) Lonicera japonica (Japanese honeysuckle) Herbaceous Species Alliaria petiolata (garlic mustard) Centaurea biebersteinii (spotted knapweed) Cirsium arvense (Canada thistle) Cirsium vulgare (bull thistle) Euphorbia esula (leafy spurge) Hesperis matronalis (Dame’s rocket) Lysimachia nummularia (creeping jenny) Lythrum salicaria (purple loosestrife) Polygonum cuspidatum (Japanese knotweed)Polygonum sachalinense (giant knotweed) Polygonum x bohemicum (Bohemian knotweed) Grass Species Microstegium vimineum (Nepalese browntop, Japanese stiltgrass) Phalaris arundinacea (reed canary grass) Phragmites australis (common reed) References

Appendix A Leaf and inflorescence descriptions

Appendix B Comparison of nonnative shrubby Lonicera

Appendix C Key to the species Lonicera

Appendix D Comparison of nonnative Berberis species

Appendix E Key to the species Berberis

Appendix F Notes about the Polygonum (Fallopia) species

Appendix G Key to the species Elaeagnus

Glossary 

FIA field staff in identifying 44 invasive plant species in the 24-state Northern Research Station region (Maine south to Delaware west to Kansas and north to North Dakota). Anyone interested in learning about these invasive plants.