Fellhanera antennophora

Fellhanera antennophora has a crustose (crust-like), finely granular thallus that can reach up to 13 cm (5.1 in) in diameter. The colour ranges from sandy brown to pale hues. The thallus is surrounded by an inconspicuous brown hypothallus with occasional visible granules. It hosts chlorococcoid green algae, mostly ellipsoid, measuring about 3–7 μm in diameter.^[1]

The granules of the thallus are more or less spherical (globose), measuring 20–50 μm in diameter. Apothecia (fruiting bodies) are flat to slightly convex, 0.5–1.0 mm in diameter, and 0.2–0.4 mm high. They are chocolate brown, often with nearly black spots, and have a greyish-white margin that fades with maturity. The excipulum is paraplectenchymatous, with dark brown hypothecium cells inside and hyaline (translucent), KOH-soluble crystals outside.^[1]

Ascospores are fusiform to long-ellipsoid, hyaline, and 3-septate, measuring 19–22 by 3–5 μm. Pycnidia are stalked with simple or rarely branched, dark brown to black conical campylidia that are often bent and mostly covered by a thallus-coloured pruina.^[1]

Chemical analysis of Fellhanera antennophora has shown no detectable substances, with reactions to chemical spot tests (K and C tests) being negative.^[1]

This species was discovered on an upright liana in one of the richest forest remnants near the Banho do Belchior area in Serra do Caraça, Brazil. It is typically found in association with lichen species from the genera Bulbothrix and Coenogonium.^[1]