Thysanothecium hookeri, published as a new species (and new genus) in 1846 - the first description of a new genus based on Australian specimens. The darker brown apothecia are on the upper side and the underside is paler. The pictures, from Casimir Roumeguère's book Cryptogamie Illustrée: Familie des lichens (1868), were printed in black and white and a previous owner has coloured them. The lichens were about 15 mm tall