The capsule is oblong, 4 to 5 lobed at the top, and the seed tip is ovoid, flat, black, 2.3 to 3.0 mm long and 1.7 to 2.1 mm wide. Under magnification under a stereoscopic dissecting microscope, the upper end of the seed is broad and round, the lower end is obtuse with a pointed protrusion (radicle), and there is a rib-like ridge in the center of the back, which is slightly curved in the middle.
The periphery is sometimes slightly concave. The ventral edge of the seed is wide and rolled, and the middle is slightly concave and flat (black or dark brown) in the shape of a fish dish. The radicle protrudes from the lower 1/4 to the outer edge of the seed, the middle is slightly concave, and the tip is pointed. The seed surface is a corrugated fold arrangement structure. On the back, it is concentrated from the edge to the ridge; on the ventral edge, it is arranged neatly and concentrated at both ends. There are 10 to 12 longitudinally arranged corrugated folds in the slightly concave and flat part, and the radicle apex is dense from the upper end to the lower end. Obviously. Thousand-grain weight is 0.83 grams, there are about 1200 grains per 1 gram, the germination rate is 65%, and the fruit ripening period is 6 to July. The seed life span is 3 to 5 years.