Rutstroemia luteovirescens (Roberge) White Cup up to 0.4cm across, concave at first then flattened, attached by a long stalk of up to 12mm long, inner surface olivaceous yellow-buff, outer similarly coloured and smooth. Asci 150–12µ. Spores elliptical often containing two oil drops, 12–15 x 5–7µ. Habitat on petioles of fallen sycamore leaves. Occasional. Not edible. Found In Europe.