This name is a synonym of Thelesperma subnudum A.Gray.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record DD54FD94-5B6A-4292-96CC-E2B6F7A03405) with original publication details: 2002.
This name record (from TICA) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Thelesperma pubescens in version 1 of The Plant List.