Home - Identification Resources (Terrestrial/Aquatic Plants)
Insects, Marine and Fish Identification Page
Garlic mustard rosettes (Caleb Slemmons, UMaine School of Biology and Ecology)
The following are a list of resources to assist in accurate identification of some species (Terrestrial and Aquatic Plants) considered to be invasive in Maine. The list is not comprehensive but experts are available to assist by following the links or via contact numbers listed below.
For additional information regarding the known distribution of these check our Maps and Other Data Page.
Many annotated photos to assist identification are available at the links listed below but for additional images check the Photo Page and the links to images hosted at http://www.invasive.org
Terrestrial Plants
| Common Name | Species Name | Source |
| Asiatic Bittersweet | Celastrus orbiculata | Univ of Maine / Maine NAP |
| Autumn Olive | Elaeagnus umbellata | Univ of Maine / Maine NAP |
| Black Swallowwort | Cynanchum louiseae | Univ of Maine / Maine NAP |
| Burning Bush | Euonymus alatus | GMRI – Vital Signs |
| Common Buckthorn | Frangula alnus | Univ of Maine / Maine NAP |
| Common Reed / Phragmites | Phragmites australis | Univ of Maine / Maine NAP |
| Garlic Mustard | Alliaria petiolata | Univ of Maine / Maine NAP |
| Giant Hogweed | Heracleum mantegazzianum | Maine Dept of Agriculture |
| Glossy Buckthorn | Rhamnus cathartica | Univ of Maine / Maine NAP |
| Honeysuckle (shrubby) / Tartarian / Belle’s / Morrow | Lonicera species | Univ of Maine / Maine NAP |
| Japanese Barberry | Berberis thunbergii | Univ of Maine – Maine NAP |
| Japanese Honeysuckle | Lonicera japonica | Univ of Maine / Maine NAP |
| Japanese Knotweed / Mexican Bamboo | Fallopia japonica | Univ of Maine / Maine NAP |
| Japanese Stilt Grass / Chinese Packing Grass | Microstegium vimineum | Univ of Maine / Maine NAP |
| Lesser Celandine | Ranunculus ficaria | Univ of Maine / Maine NAP |
| Mile-a-Minute Weed / Devils’ Tail / Tearthumb | Polygonum perfoliatum | Univ of Maine / Maine NAP |
| Multiflora/Rambler Rose | Rosa multiflora | Univ of Maine / Maine NAP |
| Porcelainberry | Ampelopsis brevipedunculata | Univ of Maine / Maine NAP |
| Purple Loosestrife | Lythrum salicaria | Univ of Maine / Maine NAP |
| Russian Olive | Elaeagnus angustifolia | Univ of Maine / Maine NAP |
Aquatic Plants
| Common Name | Species Name | Source |
| Brazilian Waterweed | Egeria densa | Univ of Maine / Maine NAP |
| Curly-leaf Pondweed | Potamogeton crispus | Maine DEP |
| Didymo | Didymosphenia geminata | Maine DEP |
| Eurasian Milfoil | Myriophyllum spicatum | Univ of Maine / Maine NAP |
| European Frogbit | Hydrocharis morsus-ranae | Maine DEP |
| European Naiad | Najas minor | Maine DEP |
| Fanwort, Cabomba | Cabomba caroliniana | Univ of Maine / Maine NAP |
| Hydrilla | Hydrilla verticillata | Univ of Maine / Maine NAP |
| Parrot feather | Myriophyllum aquaticum | Maine DEP |
| Variable-Leaf Milfoil | Myriophyllum heterophyllum | Univ of Maine / Maine NAP |
| Water Chesnut | Trapa natans | Univ of Maine / Maine NAP |
| Yellow Floating Heart | Nymphoides peltata | Maine DEP |
Maine’s Volunteer Lakes Monitoring Program has an excellent reference “Maine Field Guide to Invasive Aquatic Plants“. To report an sighting please call (207) 783-7733 and visit their website for more information.
Other
| Common Name | Species Name | Source |
| Sudden Oak Death | Phytophthora ramorum | Maine Dept of Agriculture |
- If you know of a good resource not currently included here please contact Caleb Slemmons (caleb.slemmons@maine.edu) to add a link.
Not sure what you have? Visit UMaine Cooperative Extension – Homeowner IPM Pest ID Page or the Insect and Plant Disease Diagnostic Lab.
Insects, Marine and Fish Identification Page