Western Prairie Fringed Orchid (Platanthera praeclara) The area around Manitoba's Tall-Grass Prairie Preserve is home to the only known Canadian population of this exotic-looking orchid. It is classed as an "endangered species" in Canada and Manitoba's population may be the largest in the world. Stalks holding as many as 30 flowers may rise to nearly 1 m in height. Night-flying sphinx moths, with their very long tongues are one of the few insects that can reach to the bottom of the long nectar spur of the orchid flowers.