Tree Fringewort
CR

Tree Fringewort

Ptilidium pulcherrimum

UnknownLCEULCEU

Photo: Photo: Wikimedia Commons, CC BY-SA

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Tree Fringewort faces severe threats from habitat loss due to deforestation, air pollution, and climate change impacts on its specialized bryophyte communities. This delicate liverwort is highly sensitive to environmental changes and requires very specific microhabitat conditions that are increasingly rare and fragmented.

Threat summary

Habitat

Occupies humid, shaded microhabitats on tree bark, decaying logs, and rock surfaces in old-growth temperate and boreal forests. Requires consistently moist conditions with stable temperature and humidity levels typically found in undisturbed forest understories.

Other threatened species in Ptilidiaceae

Northern Naugehyde LiverwortEN

Northern Naugehyde Liverwort

Ptilidium ciliare

Unknown

Threatened in Åland Islands

Calidris ferrugineaVU

Calidris ferruginea

Declining
VU

Syndyas nigripes

Unknown
Chrysotus cupreusCR

Chrysotus cupreus

Unknown
VU

narulukkokiiluri

Syntormon filiger

Unknown

Frequently asked questions

Why is Tree Fringewort classified as Critically Endangered?
Tree Fringewort is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Tree Fringewort faces severe threats from habitat loss due to deforestation, air pollution, and climate change impacts on its specialized bryophyte communities. This delicate liverwort is highly sensitive to environmental changes and requires very specific microhabitat conditions that are increasingly rare and fragmented.
Where does Tree Fringewort live?
Tree Fringewort occurs in Åland Islands, Albania, Austria, Belarus, Belgium, and Canada (plus 36 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Tree Fringewort?
The main threats to Tree Fringewort are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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