A. Flower erect, radially symmetrical. Stamens in two sizes: 3 short and 3 long or 6 stamens same size. Zephyranthes (2n=24 48)
AA. Flower zygomorphic. Stamens in four different lengths.
B. Spathe with 1 rarely 2-3 flowers with a single bifid bract that cover the flower´s [...]
