Micromeria tenuis (Link) Webb & Berthel. vs Micromeria tenuis (Link) Benth.
The Plant List Version 1.1 lists Micromeria tenuis as Micromeria tenuis (Link) Webb & Berthel. (ref) based on WCSP: "The record derives from WCSP (data supplied on 2012-03-23) which reports it as an accepted name (record 127407) with original publication details: Hist. Nat. Iles Canaries 3: 75 1845."
However the current record at WCSP says: Micromeria tenuis (Link) Benth., Labiat. Gen. Spec.: 374 (1834). (ref)
So it looks like at WCSP they have changed their record to reflect the earliest valid publication (1834). But now WCSP does not mention the other publication (1845) anywhere, so it's status is unclear.