Table 1.

Plant species scientific names, arranged according to alphabetic order, collection site, and corresponding code.

Plant species	Collection site	Code
Thymbra capitata (L.) Cav.	Gambelas, mainland Portugal	Tc
Thymus caespititius Brot.	Faial, Azores, Portugal	Thc_F
Thymus caespititius Brot.	Pico, Azores, Portugal	Thc_P
Thymus caespititius Brot.	Terceira, Azores, Portugal	Thc_T
Thymus caespititius Brot.	Gerês, mainland Portugal	Thc_G
Thymus caespititius Brot.	Praia do Cortiço, mainland Portugal	Thc_PC
Thymus mastichina (L.) L.	Vila Chã, mainland Portugal	Thm_VC
Thymus pulegioides L.	Serra da Nogueira, mainland Portugal	Thp_SN
Thymus villosus subsp. lusitanicus (Boiss.) Cout.	Óbidos, mainland Portugal	Thvl_O