Pyrola angustifolia (Alef.) Hemsl. Pyrola angustifolia (Alef.) Hemsl., Biol. Cent.-Amer., Bot. 2(10): 283. 1881 sec. Clemants & al. 1995=Pyrola liebmannii Lange in Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn 1867(4-7): 113, t. 1. 1868 syn. sec. The Plant List 2013