Physcia stellaris and Caloplaca ferroginea

Description:

Foliose lichen, with lobes without marginal cilia (though sometimes with rhizines projecting from the undersurface, lobe surfaces ± smooth or with faint white flecks (pseudocyphellae). The centre of the thallus is often warted, with a rather untidy look to the whole thallus. Soralia absent; apothecia with brown to black, thinly pruinose discs, margins regular to somewhat irregular with small, swollen warts or lobes. Locally on twigs and bark, predominantly in the north and west.

Habitat:

On a Holm oak twig

Notes:

Camera Model: NIKON D300. Exposure Time: 1/60 sec. f/36 ISO Speed Rating: 200. Focal Length: 90.0 mm. Flash fired