A plaque commemorates David Douglas, a Scottish-born botanist, who identified over 200 new plant species in North America, primarily a collector rather than a published scientist. Douglas made three expeditions to Canada, including journeys from the Columbia River to Hudson Bay (1827) and along the Okanagan and Fraser rivers (1833). His career ended abruptly when he was killed in Hawaii about 50 plant species and one genus bear the name of this renowned collector.