Not an accepted name (status: unknown).
The accepted name is
Carex sendaica Franch., 1895.
Carex sendaica var. pseudosendaica
T.Koyama, 1954
2% complete
No common name
J. Jap. Bot. 29: 46 (1954)
There is no corrections for Carex sendaica var. pseudosendaica yet.