Diaporthales » Cytosporaceae » Cytospora

Cytospora tanaitica

Cytospora tanaitica C. Norphanphoun, Bulgakov & K.D. Hyde, in Ariyawansa et al., Fungal Diversity [146] (2015) 

Parasitic and saprobic on branches. Sexual morph: undetermined. Asexual morph: Conidiomata 920–1250 µm diam., 450500 µm high, black, eustromatic, pycnidial, solitary, immersed to erumpent, conical to subglobose, multilocular, thick-walled, ostiolate. Ostiole 200–370 × 70–250 µm, single, cylindrical to subcylindrical, centrally located. Conidiomatal wall 40–270 µm thick, composed of brown to dark brown, thick-walled cells of textura angularis to porrecta at base and lateral region, becoming thicker, dark brown cells of textura intricata to textura angularis at upper region. Conidophores formed from inner layer of locular wall, hyaline, cylindrical to subcylindrical, branched, smooth-walled. Conidogenous cells 6–11 × 1–2 µm, hyaline, enteroblastic, phialidic, subcylindrical, occasionally lageniform, integrated or discrete, determinate, thick and smooth-walled, with collarette and minute channel. Conidia 3.5–5.5 × 1.1–2.2 µm ( = 4.7 × 1.7 µm; n = 30), hyaline, allantoid, unicellular, eguttulate, smooth-walled.


Material examined: Russia, Rostov Region, Shakhty City, Central Park, on dead branches of Betula pubescens, 5 May 2014, T. Bulgakov (MFLU 14-0790, holotype).



Cytospora tanatica (MFLU 14-0790, holotype) a Herbarium specimen. b, c Appearance of black conidiomata on the host. d Vertical section of conidioma. e Ostiloe. f–h Vertical sections of peridium. i–k Conidiophores, conidiogenous cells and developing conidia. l Conidia. Scale bars b = 1000 µm, cd = 500 µm, e = 200 µm, f = 100 µm, gh = 50 µm, il = 10 µm.




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.



About Coelomycetes

The website Coelomycetes.org provides an up-to-date classification and account of all genera of the class Coelomycetes.


  • Email:
  • [email protected]
  • Address:
    Mushroom Research Foundation, Chiang Rai 57100, Thailand