GALL
colourless, pearl-like, less than 0.5 mm large, hard warts, usually in groups, on the leaves just above the ground. The galls are transparant-greenish, old galls turn brown; the content is colourless. Each gall consists of a single cell where the fungus develops, surrounded by a number of enlarged cells without the fungus.

HOST PLANTS
polyphagous on herbs

Achillea millefolium; Campanula rhomboidalis; Centaurium erythraea, pulchellum; Cirsium oleraceum; Clinopodiun alpinum; Galium album, aparine, mollugo; Myosotis scorpioides; Phyteuma; Potentilla reptans; Pulicaria; Senecio vulgaris; Sonchus asper; Tephroseris palustris; Veronica anagallis-aquatica, beccabunga, chamaedrys, scutellata; Viola canina, odorata, pumila, reichenbachiana, riviniana, stagnina.