Teuvoahtiana has members that are
crustose, , and –an unusually diverse range of forms for a single
monophyletic branch of the Teloschistaceae. In some cases, the peripheral zone of the
thallus has unique that are elongated to form distinct . This genus is noted for the pronounced thickness of the areolae and lobes. Their colour ranges from a luminescent yellow-orange to a more muted yellowish-brown or dull orange-brown. When numerous apothecia are present, the thallus can take on a less common reddish-orange-brown shade. Structurally, the cortical layer transitions between a to a mesodermatous paraplectenchymatous state. The apothecia of
Teuvoahtiana vary from medium to large size, often congregating in dense clusters. They have a to structure, with a flat that displays a spectrum of colours from soft yellow to a more vibrant pinkish orange-brown. The , or outer layer, is characterised by a complex interwoven structure, known as "". The
asci, the reproductive sacs in which spores are formed, hold a variable count of one to eight spores. These ascospores are (divided into two compartments by a thick
septum with a perforation).
Teuvoahtiana is similar to the Australian genus
Filsoniana, but unlike that genus, is in the subfamily Xanthorioideae rather than subfamily Teloschistoideae. Close relatives of
Teuvoahtiana include the genera
Xanthopeltis and
Austroplaca. ==Species==