报道了陕西红门兰属(Chusua)1新变型--白花广布红门兰(Chusua nana f.alba Z.H.Wu & Q.H.Yang).新变型与原变型的区别在于:花白色,苞片和花序轴绿色;而原变型的花为紫红色或粉红色,苞片和花序轴通常为紫色.
Chusua nana (King & Pantling ) Pradham f. alba Z. H. Wu & Q. H. Yang,a new form of Chusua (Orchidaceae) from Shaanxi,China,is described and photographed. It differs from f. nana by having white flowers as well as green bracts and rachis.