1、 Blade difference

The lower leaf of the short spike sunflower is smaller than the upper one, which is oblique wedge-shaped or wedge-shaped, the color is light green, thin when young, and the old leaf is nearly leathery, while the sunflower leaf is nearly leathery when young, thick when old, wedge-shaped, and the small feather on the side is rhombic

2、 Petal difference

The male flower petals of short spike fishtail sunflower are narrow, long and round, about 11 mm long and 2.5 mm wide. The color is light green. Female flower petals are ovate triangular, about 3-4 mm long. The male petals of fishtail sunflower are oval, larger than the former, about 2 cm long and 8 mm wide, and the color is yellow. Female petals ca. 5 mm, shaped like male flowers