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Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Orange, Coppins & Aptroot

Synonyms:

Family: MONOBLASTIACEAE

Habitat: Oceanic zone

Description

   Thallus crustose relatively thin but well defined, smooth and rarely fissured or cracked, white, whitish, cream, sometimes with a black hypothallus in case of mosaic. Usually absence of perithecia but some authors have described them in the form of small blackish domes with a poorly developed ostiole. Conical pycnidia with a globose base terminating in a tapering tube-like appendage, 0.2-0.6 mm in diameter and 0.2-0.5 mm in height, black. Pycnidiospores extruded as a whitish paste at the top of the pycnidia, elliptical with a truncate base, 4.5-6.5 x 2.5-3 µm. Photobiont: Trentepohlia. No significant color chemical reactions. A rare taxon on the bark of deciduous trees in woodlands and humid oceanic forests.

N.B. Taxon recently differentiated from Anisomeridium polypori which differs by its less distinct thallus, thinner and above all more "crowded" by the presence of perithecia and pycnidia (slightly smaller), but there are intermediate taxa which are difficult to name...





Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Roscanvel 2
Bernard BOUFFINIER

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Roscanvel 1
Bernard BOUFFINIER

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Roscanvel 3
Bernard BOUFFINIER

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Roscanvel 4
Bernard BOUFFINIER

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Roscanvel 5
Bernard BOUFFINIER

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Roscanvel 6
Jacques HAINE

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Pycnides Coupe Roscanvel 7
Jacques HAINE

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Pycnide et gel de conidies Roscanvel 8
Jacques HAINE

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Conidies Roscanvel 9
Jacques HAINE

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Crozon 1
Bernard BOUFFINIER

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Crozon 2
Bernard BOUFFINIER

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Crozon 3
Bernard BOUFFINIER

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Crozon 4
Bernard BOUFFINIER

Anisomeridium robustum Orange, Coppins & Aptroot

Anisomeridium robustum Pycnide Roscanvel 10
Jacques HAINE



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