MYB-type transcription factor involved in trichome cell specification. Acts as a negative regulator of trichome patterning and formation. May function by suppressing the expression of GL3. Interacts with GL3. Expressed in cotyledons, petioles, rosette leaves, hydathodes, cauline leaves, stems, pedicels and flower buds. Plants over-expressing TCL2 does not have any trichomes on rosette leaves, inflorescence stems, cauline leaves or floral organs.