Trientalis borealis - (image 1 of 6)
Taxonomy
Family: Primulaceae
Synonymous with Trientalis americana Pursh
Habitat
Rich woods and shaded parts of bogs or swamps.
Associates
Distribution
Labrador and Newfoundland west to Alberta, south to PA, northern OH, northern IL, and MN.
Morphology
Perennial to 20 cm from a slender rhizome. Leaves whorled at the top of the stem, lanceolate, acuminate, 4-10 cm; a small, scale-like leaf also usually present near the middle of the stem. Flowers usually 7-merous, solitary on one to few pedicels 2-5 cm; sepals lance-linear; corolla rotate with a very short tube, 8-14 cm wide, the lobes acuminate and mucronate; stamens at the base of the corolla; filaments slender, connected by a membranous ring. Fruit a 5-valved capsule, many-seeded.
Notes
Flowers May to June
Wetland indicator: Facultative +
The 7-parted flowers are rather distinctive.
References
Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY
Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.
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Michael Hough © 2005 |