Uleoporthe Petr., Annls mycol. 39(4/6): 279 (1941)

Index Fungorum number: IF5660; 1 morphological species

Type species – Uleoporthe orbiculata (Syd. & P. Syd.) Petr.

Saprobic or biotrophic on recently dead plant tissues. Sexual morph: Stromata roughly circular, on the surface of leaves. Ascomata surrounding the conidiomata, deeply immersed in stromatic tissues, globose to subglobose, ostiolate, papillate, with copious paraphyses. Peridium of strongly flattened, pale brown cells of textura angularis at the base and thick-walled, hyaline cells of textura angularis in the papilla region. Asci 8-spored, unitunicate, short-pedicellate to almost sessile, apex rounded. Ascospores overlapping uniseriate to biseriate, clavate, 2-celled, hyaline. Asexual morph: Conidiomata loculate, irregular in shape, ostiolate. Peridium comprising layers of brown, thin-walled cells of textura epidermoidea. Conidiophores poorly differentiated, thin-walled, ellipsoidal. Conidiogenous cells in small clusters or short branched chains of cells, irregular or narrowly flask-shaped, tapering towards the upper region, both percurrent and sympodial proliferation, minute, slightly flared collarettes where percurrent proliferation occurs. Conidia ellipsoidal to fusiform, hyaline, aseptate (description of asexual morph from Cannon 2001).

Notes – This genus is a leaf epiphyllous taxon forming circular, erumpent to superficial stromata. Morphologically this genus is closer to Phyloporthe in having a foliicolous life mode, solitary, globose, astromatic ascomata and fusiform asci (Cannon 2001).


    • Uleoporthe orbiculata