KLAMATH WEED OR ST. JOHNSWORT
(Hypericum perforatum)
Klamath weed is an erect herb with opposite leaves, and bright yellow flowers commonly found in dry areas at low elevations. This species has minute oily droplets on the stems that can cause a skin rash on people with sensitive skin. Consuming large quantities of Klamath weed may cause convulsions, increased heart-rates and temperature, diarrhea, and even blindness in both humans and animals. Animals often survive Klamath weed poisoning only to die from secondary complications, such as failure to eat. This plant has long been used in herbal remedies, and was recently identified as an effective treatment against some forms of depression.
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