Halbania Racib., Crypt. Par. Java: no. 89 (1889).

Epiphytes forming black spots. Superficial hyphae at the margin of thyriothecia brown, irregular, appressoria not observed. Sexual state: Thyriothecia superficial, scattered, Halbania Racib., Crypt. Par. Java: no. 89 (1889) rounded to oval, flattened, brown to black, opening by stellate fissures. Upper wall comprising an irregular arrangement of dark cells, cells at margin branching and forming superficial hyphae, basal peridium poorly developed. Hamathecium lacking pseudoparaphyses. Asci 8-spored, bitunicate, fissitunicate dehiscence not observed, thick-walled, saccate to obovoid, sometimes globose, lacking or with a short pedicel, apical region of asci usually with a thick opaque region, ocular chamber not apparent, arranged vertically in thyriothecia. Ascospores 2–3-seriate, fusiform, brown, 3-septate. Asexual state: Unknown.

Notes: Halbania is a poorly known genus established by Raciborski (1899) and remained monotypic until Sawada (1950) added two additional species, H. cryptomeriae Sawada and H. juniperi Sawada. Luttrell (1973) placed this genus in the family Asterinaceae based on its 3-septate, brown, ascospores and thyriothecia. This genus is distinctive in Asterinaceae as ascospores are 3-septate, fusiform, inequilateral and brown. Hosagoudar (2012) placed this in synonymy with Cirsosia, however this seems unlikely as the latter has brown, conglobate ascospores and intercalary appressoria. The placement of Halbania in Asterinaceae is also tentative since the superficial hyphae lack appressoria. New collections of the type species are required so that molecular data can be obtained in order to clarify the familial placement and distinctiveness of this genus.

Type species: Halbania cyathearum Racib., Crypt. Par. Java: 89 (1889).