Hypericum perforatum  (common St. John's-wort)

© Bryan Kelly-McArthur (Photo ID #73102)

Photographer's Submitted Details

Photo Location	Donald BC
Photographer	Bryan Kelly-McArthur
Habitat	disturbed wasteland
Photo Date	July 06, 2014
Upload Date	January 08, 2017
Elevation (m)	798
Latitude
Longitude
Photo ID #	73102
Comments	a new invasive weed to this part of the Columbia Valley. The specific name refers to the translucent glands on the leaves which appear to perforate the leaves. The black glands on the leaves and flowers contain the photodynamic pigment hypericin which can cause photosentsitization issues when ingested by animals