Fauna
Fungus

Hooded Rosette Lichen

Physcia adscendens

Also known as Hooded Rosette, Fringed Rosette Lichen

Hooded Rosette Lichen forms small, pale grey-green rosettes characterized by helmet-shaped lobe tips that house powdery reproductive granules. Long, dark-tipped hairs extend from the edges of the thallus, giving it a delicate, fringed appearance. Extremely resilient and tolerant of elevated nitrogen, this pioneer species thrives on nutrient-rich tree bark, fence posts, and urban stone surfaces across the globe.

LichenEpiphyticPioneer Species
Hooded Rosette Lichen reference1 / 7
(c) Stephen Thorpe, some rights reserved (CC BY), uploaded by Stephen Thorpe · cc-by
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Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preySunlight, Atmospheric moisture, Airborne minerals
Predators
  • Slugs
  • Snails
  • Mites
ThreatsSevere sulfur dioxide air pollution
HabitatsTree bark, exposed twigs, limestone, concrete
Life spanPerennial (decades)
Classification
  1. OrderCaliciales
  2. FamilyPhysciaceae
  3. GenusPhyscia
  4. SpeciesPhyscia adscendens
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Many edible mushrooms and wild fungi have toxic look-alikes; never eat wild fungi based on app identification alone.
Responsible observation
  • Use a hand lens: Examine the lobe tips closely to spot the distinct hollow hoods and powdery soredia inside.
  • Check bird perches: Search nutrient-enriched branches, fence posts, and cemetery stones where bird droppings accumulate.
Related species
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