Pyrenomycetes Species Page

Ceratosphaeria phialidica

Large immersed ascomata
scolecospore
(Shearer) Huhndorf, M. Greif, Mugambi & A. N. Mill., Mycologia 100: 946 (2008)
Pseudohalonectria phialidica Shearer
Sordariomycetidae
Magnaporthaceae
Figure from SMH1643
Genbank Accession: AY346295 (LSU), AY780128 (Btub)
Complete Description
Ascomata globose, long beaked, brown to yellow brown, beak surface smooth, at times with yellow crystals, venter 275-335 µm diam, neck 575-700 µm long, occurring solitary, widely scattered, deeply immersed, only beaks erumpent. Ascomal wall of textura angularis-globosa in surface view; in longitudinal section 22-26 µm thick, composed of an inner layer of flattened hyaline cells, a middle layer of small, polygonal to irregular, pale brown cells, an outer layer of irregular, yellow brown, pseudoparenchymatic cells. Ascomatal apex elongate beak-like, 575-700 µm high, 65-85 µm wide, wall composed of cells similar to the ascomal wall cells, ostiole circular, with periphyses. Paraphyses abundant, ca. 4-7 ?m wide just above the asci, long tapering above. Asci cylindrical, 90-100 x 5.5-6.5 µm; with a tall, narrow, apical ring, 1.8 ?m wide, 2.3-2.5 ?m high; with 8 fasciculate ascospores. Ascospores filiform, hyaline, non-septate, 65-85 x 1.3-1.7 µm. Anamorph Harpophora-like. Conidiogenous cells phialidic, ampulliform to lageniform, micronematous, hyaline, 9-12 x 3-4 µm. Collarette 2-3 µm wide. Conidia 8-13 x 1-2.2 µm.
Reference
Huhndorf, S.M., M. Greif, G.K. Mugambi and A.N. Miller. 2008. Two new genera in the Magnaporthaceae, a new addition to Ceratosphaeria and two new species of Lentomitella. Mycologia 100: 940-955.