Sneezeweed (Helenium puberulum)
Found in wet areas along Westshore Road close to Campbell Cove. I liked the description of this species at the Thompson & Morgan website: "Autumn Lollipop boasts heads of rustic yellow and bronze with a small basal frill of ruffled petals. Highly ornate and also an extremely original cut flower." The dried and powdered petals and leaves apparently produce intense sneezing (although I can't yet speak from experience!).