Acts primarily as positive regulator of inflorescence growth. Endodermal expression is sufficient for proper inflorescence architecture (PubMed:22474391). Redundantly involved with EPFL6 in procambial development regulation. Controls stomatal patterning. Mediates stomatal development inhibition. TMM (AC Q9SSD1) functions to dampen or block CLL2 signaling. Acts as growth-regulatory ligand for ERECTA family receptors. Interacts with ERECTA. Expressed at the base of the apical meristem at 3 days after germination. Not detected in the hypocotyl. Expressed in developing stems soon after bolting, in inflorescence stems and in young siliques. No visible phenotype. Chal and cll2 double mutants are defective in growth, with a short stature, shortened pedicells and compact inflorescence. Belongs to the plant cysteine rich small secretory peptide family. Epidermal patterning factor subfamily.