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Lysimachia thyrsiflora L.
Synonym(s): Naumburgia thyrsiflora
USDA Symbol: LYTH2
Erect stems with evenly distributed leaves and yellow flowers in dense slender racemes in leaf axils near midstem; entire plant finely dotted with black or dark purple.
This plant also occurs in Eurasia. The tight racemes of yellow flowers immediately distinguish this species, with the erect stamens giving the racemes a fuzzy appearance.
Plant CharacteristicsDuration: Perennial Habit: Herb Leaf:
Bloom InformationBloom Color: Yellow
Bloom Time: May , Jun , Jul
, WY Canada: NB
, PE Native Distribution:
Much of North America south to northern California, northern Colorado, northern Missouri, West Virginia, and Maryland. Native Habitat:
Swamps, lakes, and ditches.
Growing ConditionsWater Use: High
Light Requirement: Part Shade
CaCO3 Tolerance: Low
BenefitConspicuous Flowers: yes
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2012-07-02
Research By: TWC Staff