Abstract: In this paper two new species of Yushania Keng f.are reported from Northwestern Yunnan.Yushnia habaensis Yi et L.Yang is similar to Y.bojieana Yi,but taller culms,4~7 m high,1.5~2 (2.5) cm diam.,internodes complanate or short longitudinal ditch on base a side of ramification,obviously longitudinal bridles,solid or subsolid,spongioplasm medullary and rigidity by drying;culm-sheaths culm sheath as long as internodes (length over 1/3 of internode),a few leaves,2~4 per ultimate branch,narrower blade,5~6.5 (10) mm broad,secondary veins 2~3 paired.Yushania gongshanensis Yi et L.Yang seperates from Y.flexa Yi by rhizome neck of thicker,to 2 cm diam,internodes to 2.5 (3) cm long;shorter internodes of culms,20~22 (26) cm long,hollow,longer than internodes,back surface sparse tuberculate setose;shorter leaf-sheath,(1.8) 2.2~3.5 cm,narrower blades,(5) 6.5~10 mm wide.