Lines identified in the near-infrared spectra. In the case of H&K bands, unidentified lines (or with uncertain identification) from the bracket and CO series are labelled with a smaller font and a question mark. Note: the large fraction of positive results we owe to the IRTF/SpeX spectra. In the H-band, the position of CO series is marked by solid black lines, while the bracket series and metal lines by the dashed lines.