Cauline leaves 4, opposite, linear, 2.2-3 mm, glandular pilose abaxially proximally and at margin, chalk gland 1, bases free, apex obtuse.

• 茎生叶4，相反，线，2.；2-3毫米，背面的具腺柔毛接近和在边缘，粉笔腺1，免费，先端钝的基础。