Orthilia is a genus of flowering plants in the family Ericaceae. It has only one species, Orthilia secunda. Its common names are sidebells wintergreen, one-sided-wintergreen and serrated-wintergreen. It is also called one-sided pyrola, one-sided shinleaf, and one-sided wintergreen. It was previously part of genus Pyrola, the wintergreens.

The plant has a circumboreal distribution, growing throughout much of the Northern Hemisphere.

The American wintergreen, Gaultheria procumbens, belongs to a different genus.

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