Iris iactea Pall. var.chinensis (Fisch.) Koidz. Alias ​​Ma Lin, Ma Hua Hua. Is an iris family perennial herb. Use flowers, seeds, and roots as medicine. Stirrups have heat, cooling and diuretic effects. It is distributed throughout the country.

Symptoms mainly affect the leaves. The summer spores lie on both sides of the leaf and are 0.5 to 10.3 to 0.5 (mm) in size. They were buried under the epidermis of the foal and later exposed, with a cinnamon color. At the later stage, a teliospore was produced on both sides of the leaf, with a size of 0.5 to 20.2 to 0.6 (mm). The exoskeleton was exposed and black, and there were fragments of the host's epidermis on the edges.

Pathogen Puccinia iridis (DC.) Wallr. The shank rust is a basidiomycotina fungus. The summer spores are spherical, yellowish-brown, barbed, 25–3220 to 26 (μm) in size. Winter spores are oval or stick-shaped, yellow-brown, size 34-6113-23 (pm), twins, brown handle, do not fall off.

See the white lentil rust disease for the route of transmission, onset conditions, and prevention methods.

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