Botryosphaeriales » Botryosphaeriaceae


Tiarosporella Höhn., in Weese, Ber. dt. bot. Ges. 37: 159 (1919)

Facesoffungi number: FoF 00333

Dothideomycetes, order incertae sedis, Botryosphaeriales, Botryosphaeriaceae


Saprobic or endophytic on the host plant in terrestrial habitat. Sexual morph: undetermined. Asexual morph: Conidiomata brown to dark brown, pycnidial, solitary to gregarious or confluent, subepidermal, deeply immersed, globose to subglobose, unilocular, glabrous, thick-walled, ostiolate. Ostiole single, circular, centrally located. Conidiomatal wall composed of thick-walled, brown to pale brown cells of textura angularis to textura prismatica. Conidiophores arising from the innermost layers of conidiomata, hyaline, short-cylindrical or dolliform, or irregular, branched, swollen at base, septate, thick and smooth-walled. Macroconidiogenous cells hyaline, holoblastic, cylindrical to ampuliform, discrete or integrated, indeterminate, smooth-walled, with or without proliferations. Macroconidia hyaline, ellipsoidal, fusiform or long clavate, unicellular, smooth-walled, bearing 2 or 4 tentaculiform, undulate or 1 flame-shape or irregular, mucoid, apical appendages, and sometimes 1 subcylindrical or irregular basal appendage. Microconidiogenous cells hyaline, holoblastic, ampuliform, integrated or sympodial, smooth-walled. Microconidia when present, hyaline, globose to ovoid, truncate at base, unicellular, smooth-walled.


Type species: Tiarosporella paludosa (Sacc. & Fiori) Höhn., in Weese, Ber. dt. bot. Ges. 37: 159 (1919)


Notes: Many species of Tiarosporella are saprobic on members of Poaceae (Sutton & Marasas 1976, Nag Raj 1993) and woody hosts (Jami et al. 2012, 2014). Some are known as pathogens on needle of conifers and as endophytes (Sieber 1988, Karadžić 1998, Müller and Hantula 1998). The genus is characterized by dark brown to black, unilocular conidiomata with textura angularis wall cells, and hyaline, long clavate conidia bearing 34 tentacular appendages attached to the apex of the conidium (Sutton and Marasas 1976). Morphologically, Tiarosporella can be confused with Neottiosporina, but the significant difference between these two genera relates to the conidial appendages. The appendages of conidia in Tiarosporella are located at the apex, while they are located at the base in Neottiospora.


Distribution: Canada, USA.




Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.





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