1, leaf difference
The basal leaves of Lepidium barbadense are narrow spoon-shaped, deep or shallow-pinnate, about 3-5cm long, about1-1.5cm wide, and the petiole is about1-2cm long. The upper leaves of the stem are linear, entire or serrated. However, the basal leaves of shepherd's purse are rosette-shaped, and the big head is pinnately divided, which is wider than the former, about 12 cm long and 2.5 cm wide. The top flap is oval first and then rectangular, and the side flap is rectangular first and then oval. Cauline leaves are narrowly lanceolate or lanceolate, with arrow-shaped base and serrated edge.
2. The difference between flowers and flowers
The only dish is a raceme, and the fruit is about 5 cm long. Sepals elliptic, falling off early, hairy outside. Petals will degenerate into filaments and the color will be white. Shepherd's purse is also a raceme, but it is much longer than the former, about 20 cm. Sepals are rectangular, petals are oval and white.
How to choose shepherd's purse
Look at the color: when choosing shepherd's purse, you should first choose dark green shepherd's purse, which is really wild shepherd's purse, while light green shepherd's purse is shed shepherd's purse. In addition, don't buy flowering shepherd's purse, because it is very old and not delicious.
Look at the varieties: when choosing shepherd's purse, you should also distinguish the varieties. There are generally two kinds of shepherd's purse on the market now: one is sharp and the other is round. Shepherd's purse with pointed leaves is light in color, small and thin in leaves and strong in flavor. Shepherd's purse with round leaves is thick in color, large and thick in leaves and light in taste.
Look at the quantity: when choosing shepherd's purse, it is best to choose a single one, because the quality of the stick is poor. In addition, don't dislike red leaves, which have stronger fragrance and better taste.
Look at the thickness: it is best not to buy thick and big shepherd's purse, because thick and big wild vegetables are generally close to farmland and are more likely to be sprayed with pesticides, while normally growing shepherd's purse is generally far away from farmland and less likely to be sprayed with pesticides.