👉 Psorosticha is a type of plant that has small, round, white spots on its leaves. These spots are known as psoriatic marks and are commonly found in plants such as roses and lavender. They are caused by a genetic mutation in the skin cells or tissues of the plant. Psorostichas are often associated with certain types of allergies and can cause itching, redness, and swelling when they are touched or scratched.