Polygonia
[Image:CommaButterflyCB.jpg|thumb|right|P. c-album showing angular wings and typical comma marking]
Polygonia is a genus of butterflies with a conspicuous white mark on the underside of each hindwing, hence the common name comma. They also have conspicuous angular notches on the outer edges of their forewings, hence the other common name anglewing butterflies. The related genus Nymphalis also includes some anglewing species; Polygonia is sometimes classified as a subgenus of Nymphalis.
Many members of Polygonia hibernate as adults.
Species include:Polygonia c-album – commaPolygonia c-aureum – Asian commaPolygonia comma – eastern commaPolygonia egea – southern commaPolygonia faunus – Faunus anglewing, Faunus comma, green commaPolygonia g-argenteum Doubleday & Hewitson, 1846 – Mexican anglewingPolygonia gigantea – giant commaPolygonia gracilis – hoary commaPolygonia haroldii Dewitz, 1877 – spotless anglewingPolygonia interposita Polygonia interrogationis – question markPolygonia oreas – oreas anglewing, oreas comma, sylvan anglewingPolygonia progne – grey comma, gray commaPolygonia satyrus – satyr anglewing, satyr commaPolygonia undina Polygonia zephyrus – zephyr comma