Dichotomous table for gallers on Buphthalmum salicifolium
by Hans Roskam
1a On above-ground parts => 2
1b Roots with nodule-shaped swellings. Meloidogyne hapla
2a Leaf blades, veins, petioles, also stems of young plants with flat sori, on axial parts sometimes slightly swollen, occasionally bent. Uromyces junci
2b Leaf blade usually curved downwards obliquely over the top and margins ± nest- or roll-like. On the central part of the dark green area, strongly curled underside and with froth-covered nymph. Philaenus spumarius