It is mainly characterized in the triangular - lanceolate leaves which are green but white with dark green reticulation along the midrib and more or less truncate at base ; the flowers are erect on the rachis and half - opened ; the lip is tripartite , glabrous , more or less urceolate in side view ; the hypochile is saccate , ovoid and big while the epichile is relatively tiny , reflexed , undivided and transversely oblong or subreniform 本种之主要特征为： ?呈三角?披针形， ?面?色，沿中?有白色斑块， ?基多少呈截形；花直?于花轴，半张；唇瓣呈三段? ，平?无毛，侧视时多少呈壶型；基段片囊? ， ?形，巨大，先段片相对微小、反卷， ?再细?而呈横向椭圆形。
