They have a head with two broad and short auricles. Tall fescue differs by having minute hairs on the auricles. There are flaps of shell known as auricles on either side of the straight hinge. Leaves of short stems have rounded auricles, whereas those of climbing stems lack auricles. En route accessory auricles (also known as preauricular tags) may be left behind. This is due to the embryological origin of the auricles, which are the true atria. The bases of the petals curve outwards into auricles. It has no stolons or rhizomes, and no auricles. These auricles are free of pigment and rhabdites. They lack the auricles present in "Cyclamen hederifolium". The name "auriculata" derives from the auricles at the base of the leaves. The auricles can contain chemical and mechanical sensory receptors. The auricles are usually blunt but occasionally may be more clawlike. Some species have auricles that protrude from the margins of the head. Auricles are small, equal, and crisped.