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Placidium is a
genus of
crustose to
squamulose to
almost foliose lichens. The
genus is in the
family Verrucariaceae. Most
members grow on soil (are terricolous)...
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Placidium arboreum,
commonly known as the tree stipplescale, is a
species of
corticolous (bark-dwelling),
squamulose (scaley)
lichen in the
family Verrucariaceae...
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Placidium nigrum is a
species of
squamulose (scaley), ground-dwelling
lichen in the
family Verrucariaceae. It is
found in
Northwest China and the Tibetan...
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basionym Catapyrenium acarosporoides (Zahlbr.) J.W.Thomson 1987 -
obligate synonym Placidium acarosporoides (Zahlbr.)
Breuss 2000 -
obligate synonym...
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Placidium arboreum is a
squamulose lichen with
squamules that
become green when wet....
- Involucropyrenium, Merismatium, Nesothele, Normandina, Parabagliettoa, Placidopsis,
Placidium, Placopyrenium, Polyblastia, Psoroglaena, Sporodictyon, Staurothele, Thelidium...
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described in 1857 by
Italian lichenologist Abramo Bartolommeo M****alongo as
Placidium compactum.
After having been
shuffled to
various genera in its taxonomic...
- Catapyrenium, Heteroplacidium, Involucropyrenium, Neocatapyrenium, Placidiopsis,
Placidium, and Scleropyrenium, and, as of 2010,
numbered 81 species. The morphological...
- Catapyrenium.
Other morphologically similar genera are Neocatapyrenium,
Placidium, and Scleropyrenium,
although molecular phylogenetic analyses indicate...
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phylogenetics to
belong to
genus Placidium, Cécile
Gueidan and
colleagues proposed to
unite Clavascidium with
Placidium in a 2009 publication.
Despite this...
