Physoderma negeri Karling, 1950
semiglobular, greenish warts, up to 1 mm, on the strongly disfigured leaves and stems, especially just above the ground. The plants are definitely stunted, leaves and stems are disfigured.
Orobanchaceae, narrowly oligophagous
Euphrasia “officinalis”; Odontites vulgaris.
Brandenburger (1985a: 565), Buhr (1964b), Klenke & Scholler (2015a), Tomasi (2014a).