Calyx conspicuously 8-veined, 2-lipped, upper lip more elongated, with 2 robust teeth, lower lip 3-toothed, with middle tooth larger than lateral teeth.
英
美
- 显著的花萼8脉,二唇形,上唇更多拉长,具2粗壮的齿,下唇具3齿,具中间比侧的齿大的齿。