Abstract:Bonia saxatilis var. danxiaensis, a new variety from Danxia Mountain National Nature Reserve is described and illustrated. It differs from the nominate variety by having ligules of both culm and foliage leaves without long cilia on the margin. The key to the varieties of Bonia saxatilis is provided here. We also emend the descriptions of some vegetative characters and provide a supplementary description of floral morphology for another species newly described from Danxia Mountain, Dendrocalamus pulverulentoides.