Octagonal belongs to arbor class, the height is about 10 to 15 meters, the skin color of the tree is dark gray, the branches are relatively dense.
Anise belongs to herbaceous plants, the height is about 0.4 to 2 meters, the skin color is grayish green or pale, and there are many branches.
The flower color of octagonal is pink to crimson, the pedicel is 15 to 40 mm long, and there are 11 to 20 stamens.
The flower color of fennel is yellow, the shape is obovate or nearly obovate, the stamen is less, only five.
The octagonal fruit, as it is called, has eight outward horns, which are octagonal in shape, 14 to 20 mm long, and the fruit period is from September to October.
The fruit of fennel is oblong in shape, about 4 to 6 mm in length and about 1.5 to 2.2 mm in width. The fruit period is from July to October.
