Hosseusia

Hosseusia is a fungal genus of uncertain classification in the Lecanoromycetes. The genus remains poorly understood, with no genetic data available and its proper family placement still uncertain. The single species, Hosseusia gertrudiana, is a fruticose lichen that forms tiny black patches just a few millimetres across, composed of short upright branches that flatten toward their tips. It is known only from granite rocks in a single location in Córdoba Province, Argentina, where it was collected in the early 20th century....read more on Wikipedia.