This name is a synonym of Carex pisiformis Boott.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 230546) with original publication details: Bull. Natl. Sci. Mus. Tokyo 33: 67 1953.
This name was in version 1 of The Plant List, record kew-230546.