Abstract
The Michigan Botanical Society (MBS) hosts and maintains a state register of the largest trees occurring in the State under the Society’s Michigan Big Tree Program. Initiated in 1956 by Paul Thompson, who was also its first coordinator, the continued tracking of our big trees has been carried out by MBS botanists through the volunteer efforts of subsequent Big Tree Program coordinators Elwood Ehrle, Andrew Sawyer, and Ted Reuschel, as well as numerous more certifiers over the years and more than 40 current volunteer certifiers. The Big Tree register displays 639 trees as currently active. Field checking of species during 2022 by certifiers yielded 19 new or reconfirmed state champions. Five specimens submitted to the American Forests’ National Registry of Big Trees during 2021 are still national champions. Information is presented regarding development of the Society’s Big Tree register along with instructions for accessing it online, both by computer and by smart phone.
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