Botryosphaeriales » Botryosphaeriaceae » Tiarosporella

Tiarosporella paludosa

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

Facesoffungi number: FoF 07719

 

Follicolous, occurring on leaves of sedge. Sexual morph: undetermined. Asexual morph: Conidiomata 140–160 µm diam., 140–200 µm high, brown to dark brown, pycnidial, mostly gregarious, subepidermal, deeply immersed, globose, unilocular, glabrous, thick-walled, ostiolate. Ostiole single, circular, centrally located. Conidiomatal wall 20–60 µm wide, composed of thick-walled, dark brown to brown cells of textura angularis in the lower layers, gradually merging with pale brown to hyaline cells of textura prismatica towards conidial hymenium, Conidiophores arising from the innermost layers of conidiomata, hyaline, broadly-cylindrical or dolliform, or rounded or irregular, unbranched, septate, often constricted at septa, thick- and smooth-walled. Conidiogenous cells 6–20 × 2–5 µm, hyaline, enteroblastic, ampuliform to cylindrical, discrete or integrated, indeterminate, smooth-walled, with 1–2 percurrent proliferations. Conidia 16–45 × 3.5–8.6 µm ( = 34 × 5.8 µm; n = 50), hyaline, long clavate, with obtuse apex and narrowly truncate base, straight or slightly curved, unicellular, smooth-walled, bearing appendgaes at both ends or at one end; apical appendages mostly 2, occasionally 3 or 4, tentaculiform, undulate in sterile water, angle-like in shape, or irregular in 10% KOH, mucoid, resulting from eversion and subsequent longitudinal splits in the mucilaginous sheath which envelops the upper part of the young conidium; basal appendages absent or present, subcylindrical or irregular, with blunt apex and narrow base, arising from base.

 

Material examined: Canada, Ontario, Bruce Peninsula, Oliphant, on leaves of sedge, 3 October 1977, G. Murase & M. Brundrett (DAOM 215285); Long Point, on leaves of undetermined sedge, 25 April 1989, T.R. Nag Raj (DAOM 215582).

 

Notes: Since the holotype and isotype of Tiarosporella paludosa are not in good condition, we re-examined additional specimen of this species from DAOM herbarium. We found the conidia of Tiarosporella paludosa have a subcylindrical or irregular, mucoid, basal appendage, but it degrades at maturity. Except for the basal appendage, other characters, such as conidiomata, conidiogenous cells and conidia form and dimension match to holotype and epitype described by Pirozynski & Shoemaker (1971) and Crous et al. (2015b).

 

 

Reference:

 

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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