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 Strossmayeria ochrospora
BiostatusPresent in region - Indigenous. Non endemic
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Caption: Figure 24. Strossmayeria ocrospora (HT), a-c. a, ascus with ascospores; b, ascospores; c, conidium. All x 1000. |
Article: Iturriaga, T.; Korf, R.P. (1990). A monograph of the discomycete genus Strossmayeria (Leotiaceae), with comments on its anamorph, Pseudospiropes (Dematiaceae). Mycotaxon 36(2): 383-454.
Description: Apothecia 0.8-1.0 mm in diameter, turbinate when young, shallow cupulate when mature,
receptacle dark brown, lighter toward the edge, disc reviving pale to light brown, medium to
dark brown when dry. Ectal excipulum of textura oblita, outer layers dark brown, inner layers
light brown and J+, cells 7.0-10 x 1.0-3.0 µm. Asci 8-spored, clavate, when young with an
apical papilla, 150-178 (-185) x (13-) 15-17 µm. Ascospores cylindrical clavate, outer walls
and septa light yellow-brown in all or some of the cells, J+, disintegrating cells or
refractocells sometimes present, triseriate, (33-) 44-56 x 4.0-5.0 µm, (6-) 7 (-8) septate, septa
distinctly light brown, gel sheath slightly vertucose. Paraphyses long and filiform, simple,
septate, frequently swollen and rounded at the apex, 2.0 µm wide at the middle, 3.0 µm wide
at the apex. Conidiophore brown, lighter toward the apex, septate, flexuous, with scars that
do not protrude grossly, 5.0-7.0 µm wide at the middle, 8.8 µm wide at the base. Conidia
fusiform, brown, 7-septate, dark septa absent, sometimes with central and/or basal cells dark,
36-37 x 11-12 µm, basal scar 2.0-3.0 µm wide.
Anamorph: Pseudospiropes sp.
Habitat: On dead stem of Rhipogonium scandens, and on old bark.
Distribution: New Zealand and Africa (Uganda).
Notes: Etymology: The epithet ochrospora is from the Latin, referring to the colored ascospores.
Notes: Diagnostic characters for this species are the light brown ascospores with brown
lateral walls and septa and the brown receptacle.
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