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Pyrenula macrospora forma

Pyrenula macrospora forma

Synonyms:

Family: PYRENULACEAE

Habitat: Oceanic zone

Description

   This form differs from the type, to which it is linked by intermediaries, by the formation of mosaics of thalli separated by a black ridge bordered by black pycnidia, which gives a "seam" appearance. Cylindrical asci, I-, 125-135 x 12-18 µm according to our measurements. Elliptical spores, brown-grey with 4 (6) diamond-shaped locules, 20-40 x 8-12 µm according to our measurements. Globular pycnidia with a more or less flattened apex, black with an onion-shaped chamber. Colorless conidia, filiform, curved, 10-16 x 1 µm. Form occurring on deciduous trees with smooth bark in areas with little sun and humidity (and as a curiosity often with Lecidella elaeochroma).





Pyrenula macrospora forma

Pyrenula macrospora forma Crozon 1
Bernard BOUFFINIER

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Crozon 1
Bernard BOUFFINIER

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Crozon 2
Bernard BOUFFINIER

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Crozon 3
Bernard BOUFFINIER

Pyrenula macrospora forma

Pyrenula macrospora forma Lesteven 1
Bernard BOUFFINIER

Pyrenula macrospora forma

Pyrenula macrospora forma Lesteven 2
Bernard BOUFFINIER

Pyrenula macrospora forma

Pyrenula macrospora forma avec Lecidella elaeochroma Saint-Julien 1
Bernard BOUFFINIER

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Crozon 4
Jacques HAINE

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Coupe périthéce Crozon 5
Jacques HAINE

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Pycnide Crozon 6
Jacques HAINE

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Pycnides Crozon 7
Jacques HAINE

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Asque KOH Crozon 8
Jacques HAINE

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Asque Bleu Coton Crozon 9
Jacques HAINE

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Asque Lugol Crozon 10
Jacques HAINE

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Spores KOH Crozon 11
Jacques HAINE

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Spores Bleu Coton Crozon 12
Jacques HAINE

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Conidies Crozon 9
Jacques HAINE

Pyrenula macrospora forma

Pyrenula macrospora forma sur Corylus Conidies Crozon 14
Jacques HAINE



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