Under the careful cultivation of human beings, watermelon gradually changed from white pulp to red pulp. However, red is not the only color of pulp. There are many watermelons with yellow and orange flesh now. The most common variety of yellow flesh is Texiaofeng, which is slightly larger than wild watermelon, and the sweetness of yellow flesh is not lower than that of red flesh watermelon.

Watermelon varieties with white flesh, such as the famous "Sanbai" watermelon in northern China, are not only white in flesh, but also white in skin and seeds, which is quite delicious. There is also a kind of "melon" or "seed melon" which is also white pulp, but its sweetness is very low, so people generally only eat the melon seeds inside.

Characteristics of wild watermelon:

Wild watermelon has two kinds of leaves, the lower leaves are round and undivided, the upper leaves are palmately 3-5-lobed, with a diameter of 3-6 cm, the middle lobes are longer, the lobes on both sides are shorter, and the lobes are obovate to oblong, usually pinnately divided, with coarse bristles or hairless on the upper part and stellate coarse bristles on the lower part; Petiole 2-4 cm long, stellate coarse hair and stellate pilose.

The flowers of wild watermelon are solitary in the axils of leaves, the pedicel is about 2.5 cm long, and the fruit is 4 cm long, covered with stellate bristles; Bracteoles 12, linear, about 8 mm long, coarse hair, and connate at the base; Calyx bell-shaped, light green, long 1.5-2 cm, with coarse bristles or star-shaped coarse bristles, lobes 5, membranous, triangular, with longitudinal purple stripes, and connate above the middle.