Balsam Fir, White Spruce, & Red Spruce
by Glen Mittelhauser
Tag Plants
New York Fern vs. Hay-scented Fern
by Susan Cottle
Goldenrod vs. Ragweed
by Glen Mittelhauser
White Clover vs. Alsike Clover
by Glen Mittelhauser
Large Cranberry vs. Small Cranberry
by Glen Mittelhauser
Red Pine vs. Eastern White Pine
by Glen Mittelhauser
Yellow Pine-sap vs. One-flowered Indian-pipe
by Glen Mittelhauser
The Plants of Acadia National Park
Building on the data collected by Dr. Craig Green of College of the Atlantic, The Plants of Acadia National Park was published in 2010 - the first field guide of its kind for the area.
Island Plants Map
This map is the culmination of decades of Maine island vascular plant data from published lists, unpublished lists, herbarium vouchers, and the fieldwork done by Observatory staff over the last 30 years.
Invasive Plants
The Observatory has worked on Maine Coastal Islands National Wildlife Refuge (MCINWR) islands for a number of years detecting invasive plant species. Glen Mittelhauser sprays a 45% vinegar and citrus oil solution on invasive Wild Radish on Halifax Island. Although…