⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Urostachys crassus in version 1.1 of The Plant List.
This name is a synonym of Huperzia crassa .
The record derives from Tropicos which reports it as a synonym (record 26612496
) with original publication details: Repert. Spec. Nov. Regni Veg. 36(12-15): 180, t. 171 180 1934.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:260369-2
.