The calyx is silky, without bractlets; its upper labium with a protuberant basis, is integral or weakly emarginate, the lower one is integral, almost twice longer than upper. Floral bracts are styliform, shorter than the calyx, early falling. The corolla is three times longer than the calyx.
The calyx is velvety, lacking bracts; its upper lip has a prominent base, being either fused or slightly notched, whereas the lower one is fused and nearly twice as long as the upper. The floral leaves are similar to the style, shorter than the calyx, and drop early. The petals are three times longer than the calyx.