Stilbohypoxylon moelleri Henn.

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

CULTURES AND ANAMORPH

Colonies initiated from single ascospores on 2% oatmeal agar (Difco) incubated at 20°C under 12 h fluorescent light covering 9 cm diam Petri dish in 4-5 wk, at first white, velvety, appressed, with crenate margins, with yellow and green alternating concentric zones. Reverse blackish.

Synnemata scattered on entire surface of colony, acicular to conical to somewhat cylindrical, branched or unbranched, green, up to 4 mm long x 0.2-0.4 mm diam.

Sporulating regions on the upper surface of synnemata, olivaceous.

Conidiophores in dense, dark brown palisades, dichotomously branched several times from bases.

Conidiogenous cells terminal, cylindrical, 12-18 x 4-5 mm, hyaline, smooth, bearing lateral and terminal denticulate conidial secession scars, 1 mm diam x 0.5 mm high. Conidia produced holoblastically in sympodial sequence.

Conidia yellowish to pale olivaceous, smooth, obovate, 6.5-9.5 x 3.5-4.5 mm, with flattened base 1-1.5 mm broad indicating former point of attachment to conidiogenous cell.

Teleomorph produced in 8 wk after entire colony placed on surface of SMEA (Kenerley & Rogers, 1976) in 9 cm Petri dish. Perithecial stromata developing beneath or in close proximity to synnemata and coming to bear one or more of them as spines. Stromata identical with those from natural material.