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All Fungi
Macrospora sp. P3418
Nomenclature
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Family: PleosporaceaeGenus: Macrospora
SUMMARY
Anamorph: not definitely known; likely to be similar or identical to that described as Nimbya juncicola (Simmons 1989).
Teleomorph: ascostrmata perithecia, 170-230 µm diam., 150-160 µm high, flattened-globose, black, subepidermal, non-papillate, visible from the surface only as small cracks in the host tissues. Peridium thin, composed of three to four layers of flattened dark brown fairly thin-walled angular to globose cells 4-8 µm diam. Interascal tissue composed of branched cellular pseudoparaphyses 2-2.5 µm diam. Asci about 10-15 per fruit-body, 110-140 (-170) x 30-40 µm, elongating to ca 250 µm when the outer wall breaks; broadly clavate, short-stalked, thick-walled and fissitunicate, 8-spored. Ascospores biseriately arranged, 32-38 x 15-20 x 11-14 µm, ellipsoidal, bilaterally flattened, yellowish brown, mostly with five transverse septa, and with one or more longitudinal septa in all but the end cells, cells of the spores often rounded and bulging and when they are released from the asci into water, with a broad mucous sheath surrounding the spore.