Branchlets terete, with an irregular small purple swelling between bristles at each side of leaf base, with dense appressed stout brownish or white bristles to 1.5 cm at nodes but glabrescent.

• 小枝圆柱状，具不规则小紫色肿起部分在两面叶基部的刚毛之间，具密的贴伏结实的棕色或白色刚毛在节上达1.；5厘米，但后脱落。