species 13,911 observations
Spotted St. John's Wort
Hypericum punctatum
Field notes
Hypericum punctatum, the spotted St. John's wort, is a perennial herb native to North America. The yellow-flowered herb occurs throughout eastern North America into southern Canada. The process of microsporogenesis carried out by this plant is prone to errors in chromosomal segregation. It has a diploid number of 14 or 16. Insects are attracted to the plant's pollen and the hypericin in the plant's leaves is toxic to mammals.
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Caterpillars
Moths and butterflies raised on it
Caloptilia hypericella, Gray Half-Spot, Setaceous Hebrew Character, Grey Pug Moth
6
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Plant eaters
Animals that feed on it
Ring-necked Duck, Greater St. John's Wort Beetle, Alconeura macra
3
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Flower visitors
Pollinators and other flower visitors
Common Eastern Bumble Bee, American Bumble Bee, Ligated Furrow Bee, Eastern Calligrapher
46
Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Key traits
- Layer
- Herbaceous plants
- Light
- Part shade
- Water use
- Medium
- Plant type
- Perennial Wildflower
From USDA PLANTS and the Lady Bird Johnson Wildflower Center.