fool's parsley: European weed naturalized in America that resembles parsley but causes nausea and poisoning when eaten
poisonous plant: a plant that when touched or ingested in sufficient quantity can be harmful or fatal to an organism
herringbone: a pattern of columns of short parallel lines with all the lines in one column sloping one way and lines in adjacent columns sloping the other way; it is used in weaving, masonry, parquetry, embroidery