Biscogniauxia uniapiculata (Penz. & Sacc.) Whalley & Laessøe

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

CULTURES AND ANAMORPH

Colonies on 2% Difco oatmeal agar at ca. 20C and under 12 h fluorescent light reaching the edge of 9 cm Petri dish in 3 wk, at first white, felty, faintly zonate, with diffuse margins, becoming flesh (37) and eventually overlain with a blackish stromatic layer. Reverse uncolored.

Sporulating regions scattered over entire surface of colony, whitish to grayish.

Conidiogenous structure with Periconiella-like branching pattern as defined in Ju and Rogers (1996).

Conidiophores brownish, slightly roughened, composed of a main axis, 3.5-5.5 mm broad, and sometimes one or more major branches, branches terminating with three to five conidiogenous cells arising in whorls from the main axis and/or from major branches or from additional subordinate branches; additional branches infrequently produced.

Conidiogenous cells cylindrical, hyaline to yellowish, finely roughened, 8-18 x 2.5-3.5 mm, bearing poroid conidial secession scars on apical region, with apices becoming distorted from production of numerous conidia. Conidia produced holoblastically in sympodial sequence.

Conidia hyaline, smooth, ellipsoid to short cylindrical, (5.5-) 6.5-7.5 (-8) x (2-) 2.5-3 mm, with flattened base indicating former point of attachment to conidiogenous cell.