An Annotated List of Maine's Rare Vascular Plants

Gawler, Susan

'This report is essentially a condensed version of the June 1981 Rare Vascular Plants of Maine (Critical Areas Program).' This listing of Maine's rare vascular plant species represents the most recent stage of the Critical Areas Program's effort to identify and document the most unusual elements of Maine's flora. Al though it is difficult to define rarity and to enumerate its causes, we have been able to develop this list through the use of a series of criteria and by consultation with Maine and New England botanists. Of Maine's approximately 1500 native vascular plant species, 294, or about 20% meetthe rarity criteria we have developed, and are included in this list. Also included is the following information:, the number of towns from which each species. has been collected, the number of towns from which it is now known, the rarity criteria which each meets, the level (state, NewEngland, or national) at which it's considered rare. /STUDY LOCATIONS:/ /MAINE/