× Arctodupontia is a nothogenus of Arctic and Subarctic plants in the grass family.

[2][3] The only known nothospecies is × Arctodupontia scleroclada, found in the colder regions of Eurasia and North America (Nunavut, Svalbard, Magadan, northern European Russia).

It is believed to have originated as a hybrid of two other arctic grasses: Arctophila fulva × Dupontia fisheri.

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