Juniperus brevifolia individuals (n = 367) used to infer the amplicon length of the psbA-trnH region.

N: number of individuals sampled in each locality. Voucher abbreviations: BR: B. Rumeu collection numbers as coded in the DNA Bank at the Jardín Botánico Canario ‘Viera y Clavijo’- Unidad Asociada-CSIC. Length of the psbA-trnH amplicon is shown in the last column: number of individuals without brackets, amplicon length (bp) in brackets. Representative sequences of the two amplicon types of different lengths were deposited in the GenBank (JF951047, 408 bp; JF951048, 466 bp).