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River Thyme-moss

Pseudobryum cinclidioides

UnknownLCEULCEU

Overview

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

River Thyme-moss faces severe decline due to water pollution from agricultural runoff and urban development, which alters the chemical composition of its freshwater habitats. Dam construction and river channelization have eliminated many of the natural rocky substrates and consistent water flow patterns this species requires. Climate change is intensifying drought periods, reducing water levels in streams where populations persist.

Threat summary

Habitat

River Thyme-moss grows exclusively on wet rocks and stones in fast-flowing, clean freshwater streams and rivers, typically in shaded areas with consistent moisture. It requires specific water chemistry conditions and is highly sensitive to pollution, making it an indicator species for pristine aquatic ecosystems.

Other threatened species in Mniaceae

VU

Schizymenium dolichothecum

Unknown
Long-fruited Thread-mossCR

Long-fruited Thread-moss

Pohlia elongata

Unknown
Blunt-bud Thread-mossCR

Blunt-bud Thread-moss

Pohlia bulbifera

Unknown
VU

Schizymenium pectinatum

Unknown

Frequently asked questions

Why is River Thyme-moss classified as Endangered?
River Thyme-moss is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. River Thyme-moss faces severe decline due to water pollution from agricultural runoff and urban development, which alters the chemical composition of its freshwater habitats. Dam construction and river channelization have eliminated many of the natural rocky substrates and consistent water flow patterns this species requires. Climate change is intensifying drought periods, reducing water levels in streams where populations persist.
Where does River Thyme-moss live?
River Thyme-moss occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to River Thyme-moss?
The main threats to River Thyme-moss 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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