common St. John's wort
St. John's-wort Family
Hypericum perforatum
Hypericaceae
--more--
common names
common St. John's wort
Tipton's weed
chase-devil
Klamath weed
accepted scientific name
Hypericum perforatum
L.
rules for finding collection records
Hypericum perforatum (4466)
family name
Hypericaceae
| Image Author: ©2008 Keir Morse
Image License: CC BY-NC-SA
Image Source
Category: Wildflowers
Flowers: Five petals
Petal colors: 
Flower size is about 1 inch
Leaf: Opposite
Plant Observed 2nd week of May thru 3rd week of October
Not Native. Invasive in CA, CO, NV, SD, WA, WY. Noxious weed in MT, OR.
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