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ST. JOHNSWORT
Life cycle: Local noxious. Perennial.
Leaves: Opposite, oblong, black dots along margin.
Stems: 1 to 3 feet tall. Smooth, branched, erect, somewhat two-edged.
Flowers: Bright yellow, five-petalled. Black dots along margin.
Weed Species: local noxious weed
Comments: Considered a poisonous plant-acts as a photo sensitizer to livestock.



