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Pyrenidium zamiae (Müll. Arg.) Matzer

Data Set Maintenance: Data set compiled. Data set author(s): Cáceres M. @EXCL@ Calatayud V. (02-12-18). Data set not revised; not to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Pyrenidium. Dacampiaceae Körb. (1855); Dothideales.

Taxonomic Literature: Matzer M. Mycol. Pap. 171: 1-202 (1996).

Biogeography: Neotropical and palaeotropic. Continent: Southern America and Asia-Tropical. Country or state(s): Philippines; Costa Rica, Southeastern Mexico (Mexico), Jamaica, French Guiana (Caribbean overseas department of France), Colombia, Peru, and Southeastern Brazil (Brazil).

Ecology: Biotroph; lichenicolous; endosubstratic; growing on living leaves. Host or Phorophyte Taxonomy: Porina epiphylla, P. lucida.

Lichen Photobionts: Primary photobiont absent.

Thallus: Indistinct.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Perithecioid, subglobose, obpyriform, or broadly ovoid, forming inside the thallus or mycelium of the host, not emerging, 100-150 µm wide, 100-170 µm high, with a black or brown surface. Wall: Not carbonized. Margin: Black or brown, 7-25 µm wide; external filaments absent. Exciple: Not carbonized; brown (brown to pale brown). Periphyses: Present. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Distinctly branched, distinctly anastomosed; cells 1-3-(4) µm wide. Hypothecium: Brown.

Asci: Cylindrical, distinctly stipitate, 48-70 µm long, 10-14 µm wide; tholus not amyloid; ocular chamber present (only in young ascomata); narrow; dehiscence bitunicate (fissitunicate); exoascus not amyloid, not hemiamyloid; ascoplasm dextrinoid (endoascus CR+ orange).

Ascospores: Not uniseriate (more or less bisseriate), c. 8 per ascus, spores 8 per ascus, ellipsoid, 15-18-21-(22) µm long, 4-4.8-5-(6) µm wide, obtuse; septa present; transversally septate, 3-transversally septate; lumina of equal size; wall thin, laterally constricted where the septum meets the spore wall, becoming pigmented, middle brown, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)

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