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Species of lichen
Stereocaulon paschale is a species of
lichen belonging to the family
Stereocaulaceae .
[1]
It has a
cosmopolitan distribution .
[1]
In
Iceland , it has the
conservation status of a
vulnerable species (VU).
[2]
Ecology
Stereocaulon paschale is host to some
lichenicolous fungi which infect various parts of the
thallus . Most of these fungi have a
Holarctic distribution . These fungi include:
[3]
Arthonia stereocaulina , Infects the phyllocladia but rarely causes disease.
Catillaria stereocaulorum , Mainly infects the phyllocladia, which can become swollen and dark. It is common in the Arctic.
Cercidospora stereocaulorum , Infects phyllocladia and sometimes on stems, cephalodia and apothecia.
Endococcus nanellus , Infects phyllocladia and sometimes on stems, cephalodia and apothecia. Often found in discolored apothecia but does probably not cause the discoloration.
Lasiosphaeriopsis stereocaulicola , Usually found at the stem base which can turn brown but no other symptoms are known.
Lichenopeltella stereocaulorum , Most often found on stems. This species was only discovered in 2010.
Opegrapha stereocaulicola , Infects stems which may become darker.
Phaeosporobolus alpinus , Commensal. Most commonly found on species of
Pertusaria or
Ochrolechia .
Polycoccum trypethelioides , Produces galls on stem which change colour with time turning
cinnamon colour or brown.
References