梗花粗叶木(原亚种) geng hua cu ye mu (yuan ya zhong)

Branches sparsely pubescent or subglabrous. Leaf blade with nerves abaxially sparsely pubescent; nervules reticulate, slender and inconspicuous. Peduncles slender, longer or shorter than petioles. Calyx lobes relatively narrow and short.

Montane forests, shaded and wet places; 1200-2500 m. Yunnan [Bhutan, NE India, Myanmar].