C. lancifolium is closer to subgenus Jensoa than to the others.C. tortisepalum var. longibracteatum is close to C. tortisepalum var. tortisepalum and both of them are far from C. goeringii.

• 春剑和莲瓣兰相似性更高，它们与春兰的关系较远，不支持送春作为蕙兰下的变种。