Maine Natural History Observatory conducts research on vascular plants and seaweeds all over the state.  MNHO's work with Maine flora includes botanical surveys, photographic field guides, and designing and maintaining databases to track species trends.

Projects include:

Botanical surveys of over 75 coastal Maine islands over the last 15+ years

Seaweeds of Maine (publication date TBA)

Aquatic Plants of New England (publication expected in 2022)

Island Wildflowers: A Field Guide to the plants of the Downeast and Acadia Coasts (publication expected in 2020)

Grasses and Rushes of Maine (2019)

The Plants of Baxter State Park (2016)

Sedges of Maine - A Field Guide to Cyperaceae (2013)

The Plants Of Acadia National Park (2010)