Biscogniauxia arima San Martín, 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 not reaching the edge of 9 cm Petri dish, at first white, felty, azonate, with diffuse margins, becoming blackish from center outwards. Reverse grayish sepia (106).

Sporulating regions scattered over entire surface of colony, smoke gray (105).

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

Conidiophores pale brown, slightly roughened, di- or trichotomously branched, sometimes with additional branches arising from the first level of conidiogenous regions, 4-5 mm diam, with two to three conidiogenous cells arising from each terminus.

Conidiogenous cells cylindrical, hyaline, smooth, 15-26 x 3-4 mm, bearing somewhat denticulate conidial secession scars on apical region, frequently elongated from the apical region to form rachis after producing one to several conidia. Conidia produced holoblastically in sympodial sequence.

Conidia hyaline, smooth, ellipsoid to short cylindrical, 4.5-8 x 2.5-3 mm, with flattened base indicating former point of attachment to conidiogenous cell.