Branchlets, petioles, pedicels, and outside surface of hypanthia glabrous. Leaf blade abaxially sparsely pubescent on veins or barbate in vein axils.

• 管状体的小枝，叶柄，花梗和外表面无毛。叶片背面疏生短柔毛在脉上或具髯毛的在脉腋。