Anemone multifida Poir.
Habitat: Dryish slaty or calcareous gravel and ledges. [Non-tidal rivershore (non-forested, seasonally wet)]
Range: Newfoundland to Alaska, south to northern New England and west to Oregon.
Aids to Identification: Cut-leaved anemone has basal leaves on long stalks which are deeply divided into three parts, and each of these parts is deeply lobed into fine divisions. The leaves at the base of the flowering stalk are similar, but nearly stalkless. The flowers range in color from white to yellowish to red, with 5-9 sepals.
Ecological characteristics: Known in Maine from calcareous rivershore ledges, rooted in the narrow fissures.
Phenology: Flowers May - June.
Synonyms: In Maine represented by variety multifida. Synonyms include Anemone globosa (Torr. & Gray) Nutt. exPritz.; Anemone hudsoniana (DC) Richards.; Anemone multifida Poir. var. hudsoniana DC.; Anemone multifida Poir. var. globosa Torr & Gray.
Known Distribution in Maine: This rare plant has been documented from a total of 8 town(s) in the following county(ies): Aroostook.
Reason(s) for rarity: A sub-arctic species at the southern limit of its range.
Conservation considerations: Known populations are small, but not currently subject to any particular human threat; plant seems to persist on the few river ledges where it grows. Heavy recreational use of ledges could pose problems.