Epilobium anagallidifolium Lam.
Habitat: Damp moss or on wet rock in alpine areas. [Alpine or subalpine (non-forested, upland)]
Range: Circumboreal, south to northern New England and northern New York . All known Maine occurrences of this species are in Baxter State Park.
Aids to Identification: This perennial herb grows to 5-15 cm, usually forming small mats or cushions. Leaves are entire or few-toothed, 1-2 cm long, and blunt-tipped. The flowers bear 4 white to pink, notched petals. The fruit is a capsule that dehisces to bear seeds with a tuft of hairs for wind dispersal.
Ecological characteristics: Moist, seepy spots in alpine areas. Sometimes found on talus.
Phenology: Flowers June - August.
Synonyms: Epilobium alpinum L., pro parte; Epilobium anagallidifolium Lam. var. pseudoscaposum (Hausskn.) Hultén.
Known Distribution in Maine: This rare plant has been documented from a total of 2 town(s) in the following county(ies): Piscataquis.
Reason(s) for rarity: At southern limit of range; disjunct from principal range.
Conservation considerations: Populations could be threatened by heavy recreational (hiking) use.