Irish lichens

Arthopyrenia cinereopruinosa

Order: Incertae sedis       Family: Arthopyreniaceae

Species: Arthopyrenia cinereopruinosa

Growth type crustose
Photos: On Whitebeam. Barnaviddane, Co. Cork, SW Ireland.
Identified by John Douglass

Thallus immersed or slightly bleaching the bark with small circular or ellipsoid perithecia often covered by thin layer of bark cells. Spores 1-septate, 15-22 x 5-8 Ám, constricted at the septum with both cells medially constricted and with a distinct perispore. Microscope photographs below. Chemical results negative

Found on smooth bark, especially of young Hazel and Ash

Similar: Arthopyrenia analepta has larger perithecia


Arthopyrenia cinereopruinosa

Arthopyrenia cinereopruinosa

Microscope photographs
Arthopyrenia cinereopruinosa

Arthopyrenia cinereopruinosa
Arthopyrenia cinereopruinosa . May 2012

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