Common greenshield lichen Flavoparmelia caperata

Features

It thrives on well-sunlit deciduous trees with a fairly acidic bark, including conifers, silicate rocks, monuments, roof tiles, banks, heaths and areas with clean air.

Species	Lišaji
Living space	Conifer forest, Deciduous forest
Size

Description

Thallus to 20 cm diam, often forming conspicuous, extensive patches., ± closely appressed but becoming somewhat detached towards the centre. Lobes 5-13 mm wide, wavy, rounded at the apices, ± contiguous at the tips but overlapping at the centre, the margins often indented. Upper surface yellow to yellow-green, occasionally grey-green (in shade), often coarsely corrugate especially towards the centre, pustulate-sorediate. Soredia coarse and granular, occasionally adhering and forming gnarled lumps. Lower surface black, brown towards apices, rhizines absent from a narrow zone along the margin. Ascomata rare, to 8 mm diam, disc red-brown, the thalline exciple ± sorediate. Ascospores 15-19 x 9-10 µm, ellipsoidal. Pycnidia not known.