Biscogniauxia plumbea Y.-M. Ju & J. D. Rogers

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 1.5 wk, at first vinaceous buff (86), finely plumose, appressed, azonate, with diffuse margins, becoming cottony, grayish to blackish. Reverse olivaceous black (108).

Sporulating regions scattered over entire surface of colony but more abundant at edges, whitish.

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

Conidiophores brownish, coarsely roughened, composed of a main axis, 3-5 mm broad, and less frequently one or more major branches, the branches terminating with three to six 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 short cylindrical, hyaline to yellowish, finely roughened, 7-10 x 3-4 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, obvoid to ellipsoid, 4-5 x 3-3.5 mm, with flattened base indicating former point of attachment to conidiogenous cell.