Welcome to UBC forums. Looks like Euphorbia lathyris. Be careful the white milky sap is toxic. https://www.google.co.uk/search?q=e...ei=n5lZVaWlIcbbU8vggeAM&sqi=2&ved=0CAYQ_AUoAQ http://www.euphorbia.de/giftstart_e.htm
I think you will find it is in British Columbia Canada. http://linnet.geog.ubc.ca/Atlas/Atlas.aspx?sciname=Euphorbia lathyris&noTransfer=0 http://www.cbif.gc.ca/eng/species-b...fic-name/euphorbia-lathyris/?id=1370403266861 http://www.gbif.org/species/3066965