Calyx teeth narrowly triangular. Corolla dark gray-red, to 2.5 cm, upper lip entire, middle lobe of lower lip subequal to lateral lobes.

• 萼齿狭三角形。花冠深灰色红，对2.；5厘米，上面唇全缘，下唇近等长于侧面裂片的中部裂片。