This name is a synonym of Holomitrium calycinum (Hedw.) Mitt..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35127589) with original publication details: Sp. Musc. Frond. 70. 14 f. 1–5 1801.
This name was in version 1 of The Plant List, record tro-35127589.