The record derives from TICA
(data supplied on )
which reports it as a synonym (record
D0A024A2-CE8C-4D1A-A582-04E987A56E00) with original publication details: Univ. Calif. Publ. Bot. 3: 278. 1907 278 1907.
Full publication details for this name can be found in IPNI:
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 Troximon heterophyllum in version 1 of The Plant List.