Irish lichens

Mixtoconidium insidens, Mixtoconium canariense

Order:       Family: Incertae sedis

Species: Mixtoconidium insidens # (M. canariense)

Growth type lichenicolous
Photos: On Ramalina lacera Co. Limerick, Ireland.
New to Ireland and Great Britain. Confirmed by Javier Etayo

Large black pycnidia (resembling apothecia) surrounded by a paler rim are immersed in galls on the surface of the host thallus. Two types of conidia present, the macroconidia hyaline, (0-)1-septate, 12-14.5 x (4-)4.5-5 Ám. Microconidia simple, 5-6.5 x 1.5-2 Ám. Apothecia emerge in groups of 2-6 and form a rounded dark-brown structure covered in orange pruina. Spores 3-septate, hyaline becoming brown, 16-21 x 6-8 Ám. Microscope photographs of macroconidia below.

Forms galls on the thalli of Ramalina lacera (Ireland) and recorded on Ramalina canariensis in the Canary Islands and Spain

Mixtoconidium insidens

Mixtoconidium insidens

Mixtoconidium insidens

Microscope photographs
Mixtoconidium insidens, conidia

Mixtoconidium insidens, conidia
Mixtoconidium insidens (Mixtoconium canariense) . Co. Limerick September 2019

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