There are usually two leaves, the leaves are heart-shaped or oval, the apex is gradually pointed or acute, the base is deeply heart-shaped, the top is round, the leaves are sparse and short-haired, the veins are dense, and only the veins on the back of the leaves are hairy; Stamens are inserted in the middle of ovary, filaments are as long as anthers or slightly longer, connective is prominent and short-tapered; Ovary semi-inferior or nearly superior, spherical, short, stigma lateral. The fruit is nearly spherical, with a diameter of about 65438 0.5 cm and brown. The flowering period is April-May.
2. The gold earrings belong to the genus Asarum of Aristolochiaceae, and they are also called Equisetum Asarum, Tile, and Plough. The rhizome is short, the roots are clustered, slightly fleshy, with a diameter of 2-3 mm and a strong spicy taste.
The leaves are oblong, ovoid or triangular-ovoid, the apex is acute or acuminate, the base is ear-shaped, there are white cloud points on both sides of the midvein of the leaves, and occasionally there are sparse short hairs, small granular oil spots can be seen on the back of the leaves, and the veins and edges of the leaves are pilose;
Perianth lobes are broadly ovoid to reniform ovoid, with semicircular cushion patches from the middle to the base, white; The connector is protruding, conical or wide tongue-shaped, or slightly concave in the center; The ovary is inferior, and the lobes are about 65438±0mm； long; Stigma lateral. Flowering in March-April.
3. Du Heng is a perennial herb of Aristolochia and Asarum. The rhizome is short, the roots are clustered, slightly fleshy, the leaves are wide and heart-shaped to kidney-shaped, the apex is blunt or round, the base is heart-shaped, the leaves are dark green, there are white clouds on both sides of the midvein, and the leaves are light green; Bud leaf kidney is heart-shaped or obovate, with eyelashes at the edge.
The flowers are dark purple, the perianth tube is bell-shaped or cylindrical, the throat is not constricted, the inner wall has obvious lattice mesh, the perianth lobes are upright, oval, smooth and without papillae wrinkles; The connector protrudes slightly; The ovary is semi-inferior, the style is free, and the stigma is ovoid and lateral. Flowering in April-May.
4. Aristolochia. Et Zucc, also known as water horse fruit, snake ginseng fruit, triangle grass and autumn wooden basin, is named after its ripe fruit, such as a bell hanging under a horse's neck. Aristolochia is a perennial twining herb.
5. Calla lily is a perennial erect herb of Calla lily of Aristolochiaceae, with grayish brown pubescence, stout rhizome and many slender fibrous roots. The leaves are heart-shaped, the top is short and tapering, the base is heart-shaped, and the sides and edges are pilose;
Stamens are almost as high as styles, anthers are oblong, and connective is not prominent; Most carpels are free, the style is not obvious, and the stigma is small, which is attached to the ventral seam of carpels. Capsule is capsule-shaped, and cracks along the abdomen when mature.