americanus
americanus

Canada, northern United States, Buryatiya region of Russia


angustatus
angustatus

Siberia, China, Russian Far East, Japan, Korea, Mongolia, Himalayas, Indian Subcontinent, Indochina, Philippines, Indonesia


calamus
calamus

Siberia, Russian Far east, Mongolia, Manchuria, Korea, Himalayas; naturalized in Europe, North America, Java and New Guinea