CR

Hieracium pachycalamum

Local name: grovstjälkig fibbla

Unknown

Overview

Grovstjälkig fibbla (Hieracium pachycalamum) is a perennial herbaceous plant in the hawkweed family, characterized by its notably thick, robust stems and yellow composite flower heads typical of the genus. This rare Nordic endemic produces distinctive basal rosettes of hairy leaves and serves as a specialized pollinator resource for local alpine insects during its brief flowering period.

Hieracium pachycalamum is critically endangered due to its extremely limited distribution and small population size, making it highly vulnerable to habitat loss and environmental changes. The species faces ongoing threats from human activities and natural factors that could easily drive it to extinction given its restricted range.

Threat summary

Habitat

Grovstjälkig fibbla occupies specific microhabitats on calcareous rock ledges and crevices in subalpine and alpine zones, typically between 800-1400 meters elevation. The species requires well-drained, mineral-rich soils with partial shade provided by surrounding cliff faces or scattered shrub vegetation.

TERRESTRIAL· major

Frequently asked questions

Why is grovstjälkig fibbla classified as Critically Endangered?
grovstjälkig fibbla 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. Hieracium pachycalamum is critically endangered due to its extremely limited distribution and small population size, making it highly vulnerable to habitat loss and environmental changes. The species faces ongoing threats from human activities and natural factors that could easily drive it to extinction given its restricted range.
Where does grovstjälkig fibbla live?
grovstjälkig fibbla 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 grovstjälkig fibbla?
The main threats to grovstjälkig fibbla 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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