Balansia sp.

Description

Stromata enclosing the inflorescence, spindle-shaped, 40-50 x 2-3 mm.

Conidiomata on the stroma surface, indistinct, generally circular with margins slightly raised above stroma surface.

Conidia formed in conidiomata on simple or branched, aseptate conidiophores up to 60 μm long, straight-slightly arcuate, narrowly obclavate with a blunted tip, 15-27 x 1-1.5 μm, hyaline, aseptate, multiguttulate.

Ascostromata each consisting of a hemispherical-spherical capitulum, 0.7-1.4 mm in diameter, with a black, papillate surface, borne on a stipe up to 0.7 mm long and 0.5 mm wide, with a short black collar around the base of the stipe.

Perithecia crowded, obpyriform, 195-260 x 130-182 μm, with ostiolar periphyses and a basal aparaphysate cluster of asci.

Asci cylindrical, 87-135 x 4.0-4.5 μm with a hemispherical apical thickening 3 x 3 μm perforated by a fine pore.

Ascospores filiform, 7-septate, 80-120 x 1.0-1.5 μm, hyaline, breaking into two 3-septate part-ascospores.

Hosts
   
Host family: Poaceae
   
Host species: Paspalidium distans

Distribution

QLD

Comments

This very rare fungus has been found only once in Australia. Its characteristics are most like those of Balansia asperata, which has been recorded in Asia.

Highslide JS
Balansia sp. on Paspalidium distans - BRIP 2814.
Scale bar = 2 mm.
Highslide JS
Balansia sp. on Paspalidium distans - BRIP 2814.
Scale bar = 1 mm.
Highslide JS
Balansia sp. on Paspalidium distans - BRIP 2814.
Scale bar = 500 µm.
Highslide JS
Balansia sp. on Paspalidium distans - BRIP 2814.
Scale bar = 500 µm.
Highslide JS
Balansia sp. on Paspalidium distans - BRIP 2814.
Scale bar = 500 µm.