Checklist of the Coleoptera of Massachusetts: A searchable, sortable list of all beetles known in the state of Massachusetts. (added 2023)

Every day, since 2004, I have posted a "Bug of the Day" to Flickr. That's 1100+ bugs (arthopods if you want to be technically correct). Get Bug of the Day as an email or an RSS feed, as a slideshow, or explore the entire Flickr set on your own. (updated daily)

Visit the Invasive Species Weblog to read the latest information about invasive plants and animals. (updated regularly)

Breeding system, hybridization, and polyploidy of the invasive plant Fallopia japonica (Japanese Knotweed, Polygonum cuspidatum) and related species, plus information on controlling infestations, other current research, and native plant alternatives. (updated 12/2006)

In 2001, I also gave a talk for the New England Botanical Club titled "Through the Looking Glass: History and Consequences of the Introduction of American Plant Species into Europe".

See the species list or download a copy of the peer-reviewed paper, "The introduction of American plant species into Europe: issues and Consequences." a chapter in the book "Plant Invasions: Ecological Threats and Management Solutions."

Ancient weird seamless tiles made from scans of dried plant specimens and photos, for use as desktop wallpaper, webpage backgrounds, or whatever you want...it's absolute freeware. (Updated 8/6/02)