Family: Primulaceae
swamp loosestrife, tufted loosestrife
[Naumburgia thyrsiflora (L.) Rchb.]
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Etymology: Lysimachia: probably for Greek king Lysimachus or maybe from Greek lysis for "a release from" and mache for "fighting or strife"
Plants: erect, perennial, 1' -2 1/2' tall forb; roots long, creeping on or near the surface of the ground
Leaves: narrowly lance-like to linear, dotted
Flowers: yellow, 6-parted, 1/3" wide, petals linear with black marks, separate stamens nearly twice as long as the petals; inflorescence a few, 1/3"-1 1/4" tall, dense, short, rounded clusters (racemes) on stalks spreading from the middle leaf axils; blooms May-July
Habitat: wet; bogs, marshes, shallows
Conservation Status: Native
Plants: erect, perennial, 1' -2 1/2' tall forb; roots long, creeping on or near the surface of the ground
Leaves: narrowly lance-like to linear, dotted
Flowers: yellow, 6-parted, 1/3" wide, petals linear with black marks, separate stamens nearly twice as long as the petals; inflorescence a few, 1/3"-1 1/4" tall, dense, short, rounded clusters (racemes) on stalks spreading from the middle leaf axils; blooms May-July
Habitat: wet; bogs, marshes, shallows
Conservation Status: Native
- racemes with dense tufts of yellow flowers on long peducles in the leaf axils
- petals 3- 5 mm long, with black streaks or dots
- leaves opposite
- leaf midribs and stems sometimes with loose pubescence
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 7, Wetland Indicator = OBL USDA Plants Database: Federal Distribution and detailed information including photos
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Mary Ann Feist
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Mary Ann Feist
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Christopher Noll
Merel R. Black
Merel R. Black
Kenneth J. Sytsma
Kenneth J. Sytsma
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Botanical Illustration
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