Fissurina platythecioides

Fissurina platythecioides was described as a new species by Eimy Rivas Plata and Robert Lücking in 2012 from material collected at Los Amigos Research and Training Center (CICRA) in Madre de Dios, Peru. It was introduced in the context of a survey of Graphidaceae at this Amazonian lowland rainforest site. The specific epithet platythecioides alludes to its similarity with some species of Platythecium. ==Description==

The thallus is crustose and grows on bark. It is light green, continuous, and up to across, with a thickness of 70–120 μm and a dense . The is a member of the green algal genus Trentepohlia. The medulla is white, and the lacks crystals except near the fruiting bodies (). The lirellae are straight to curved, mostly unbranched, and immersed but gaping, with a complete . They measure 0.5–2 mm long and 0.2–0.3 mm wide, with an exposed light orange-brown . Ascospores are (divided into multiple chambers by transverse and longitudinal septa), colorless, and 30–50 × 15–20 μm (8 per ascus), and no lichen substances were detected by thin-layer chromatography. ==Habitat and distribution==

The species is known from the type locality in Amazonian Peru (Madre de Dios), where it was collected at elevation in tropical lowland rainforest. It was found on the bark of a tree in secondary forest. ==References==