Leveillella

Leveillella Theiss.&Syd.,Annls mycol. 13(3/4): 284 (1915).
Synonym
Parasterinella Speg., Boln Acad. nac. Cienc. Córdoba 27(4): 382 (1924)

Epiphytes on the upper surface, forming blackened minute areas. Superficial hyphae forming blackened, crust-like, circular areas, hard to remove from the host surface. Appressoria not observed. Sexual state: Thyriothecia superficial, gregarious and scattered, circular to elliptical to Y-shaped, flattened, conical, opening by linear or stellate fissures. Upper wall composed of dark carbonaceous cells which could not be differentiated. Hamathecium with sparse, filamentous pseudoparaphyses. Asci 8-spored, bitunicate, globose to subglobose, short pedicellate, apical region of asci usually with a thick opaque region, apically rounded with ocular chamber. Ascospores 1-septate, with upper cell slightly wider and shorter than the lower cell, hyaline, becoming brown with age, smooth-walled. Asexual state: Unknown.

Notes: Leveillella was established by Theissen (1915) based on Leveillella drimydis (Lév.) Theiss. & Syd. described as from leaves of Drimys winteri J.R. Forst. & G. Forst. in Chile. It is possibly similar to Pseudolembosia geographica (Massee) Theiss. in Parmulariaceae. The asci are subglobose unlike most Asterinaceae, however the brown conglobate ascospores, asci with a thick opaque region and colonies are rather typical of Asterinaceae. Thus, we place it in Dothidoemycetes genera incertae sedis.

Type species: Leveillella drimydis (Lév.) Theiss. & Syd., Annls mycol. 13(3/4): 284 (1915).