This name is a synonym of Chylismia claviformis subsp. cruciformis (Kellogg) W.L.Wagner & Hoch.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50313523) with original publication details: Univ. Calif. Publ. Bot. 34(1): 108 1962.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:172874-2.
This name was in version 1 of The Plant List, record tro-50313523.