Pin-cushion Sunburst Lichen

(Polycauliona polycarpa)

Conservation Status
Pin-cushion Sunburst Lichen
Photo by Alfredo Colon
  IUCN Red List

not listed

     
  NatureServe

NNR - Unranked

     
  Minnesota

not listed

     
           
           
           
 
Description
 
 

Pin-cushion Sunburst Lichen is common across North America and Europe. It is found in humid microclimates on bark, usually on twigs.

The vegetative body (thallus) is leaf-like (foliose) and divided into small branches (lobes). It forms colonies up to 1¼ in diameter or larger. It grows tightly attached to the substrate (bark) but does not have root-like structures (rhizines). The lobes are flat to convex and 1 64 to 1 32 (1.2 to 0.7 mm) wide. The upper surface is yellow to bright orange and smooth, sometimes somewhat shiny. It does not produce powdery dull granules (soredia) or shiny granules (isidia). There are also tiny, globular chambers (pycnidia) embedded in the thallus with an opening through which fungal spores are released. The pycnidia are inconspicuous and difficult to see because they are the same color as the thallus or only slightly darker. The lower surface of the thallus is white and somewhat wrinkled. It has scattered, short, peg-like structures (hapters) attaching the thallus to the substrate.

Disk-like, spore-producing structures (apothecia) are extremely abundant, sometimes covering the entire thallus. The disks are stalked, orange, up to 3 16 (4.5 mm) in diameter, and shaped like a plate. They are usually smooth but sometimes wrinkled. Each disk has a ring of tissue around it that resembles the tissue of the thallus.

 
     
 

Similar Species

 
     
     
 
Habitat and Hosts
 
 

On bark. Humid.

 
     
 
Ecology
 
 

Season

 
 

 

 
     
 
Distribution
 
 

Distribution Map

 

Sources

4, 24, 26, 29, 30.

 
  7/6/2021      
         
 

Occurrence

 
 

Common

 
         
 
Taxonomy
 
  Kingdom Fungi (fungi)  
  Subkingdom Dikarya  
  Division Ascomycota (sac fungi)  
  Subdivision Pezizomycotina  
  Class Lecanoromycetes (common lichens)  
  Subclass Lecanoromycetidae  
  Order Teloschistales  
  Suborder Teloschistineae  
  Family Teloschistaceae  
  Subfamily Xanthorioideae  
  Genus Polycauliona  
  Mycobiont Polycauliona polycarpa  
  Photobiont    
       
 

This species was formerly classified as Xanthoria polycarpa. In 2013 it was moved to the genus Polycauliona. Most print and online sources still use the old name.

 
       
 

Synonyms

 
 

Lecanora candelaria var. polycarpa

Teloschistes polycarpus

Xanthoria polycarpa

 
       
 

Common Names

 
 

Orange Lichen

Orange Wall Lichen

Pin-cushion Sunburst Lichen

Pincushion Sunburst Lichen

 
       

 

 

 

 

 

Glossary

Apothecium

An open, disk-shaped or cup-shaped, reproductive structure, with spore sacs on the upper surface, that produces spores for the fungal partner of a lichen. Plural: apothecia.

 

Foliose

Adjective: Leaf-like growth form; referring to lichens with leaf-like growths divided into lobes.
Noun: The leaf-like, vegetative body of a lichen (thallus) that has thin, flat lobes which are free from the substrate.

 

Rhizine

A root-like structure of a lichen that attaches the lower layer to the substrate.

 

Thallus

The vegetative body of a lichen composed of both the alga and the fungus.

 
 
Visitor Photos
 
           
 

Share your photo of this fungus.

 
  This button not working for you?
Simply email us at info@MinnesotaSeasons.com.
Attach one or more photos and, if you like, a caption.
 
 

Alfredo Colon

 
    Pin-cushion Sunburst Lichen   Pin-cushion Sunburst Lichen  
           
    Pin-cushion Sunburst Lichen   Pin-cushion Sunburst Lichen  
           
    Pin-cushion Sunburst Lichen      
           
           
 
MinnesotaSeasons.com Photos
 
 

 

 
           
           

 

Camera

     
 
Slideshows
 
 
     
     
     

 

slideshow

       
 
Visitor Videos
 
       
 

Share your video of this fungus.

 
  This button not working for you?
Simply email us at info@MinnesotaSeasons.com.
Attach a video, a YouTube link, or a cloud storage link.
 
 

 

 
     
     
       
       
       
 
Other Videos
 
     
     
     
       

 

Camcorder

 
 
Visitor Sightings
 
           
 

Report a sighting of this fungus.

 
  This button not working for you?
Simply email us at info@MinnesotaSeasons.com.
Be sure to include a location.
 
  Alfredo Colon
5/30 to 6/1/2021

Location: Woodbury, Minnesota

Pin-cushion Sunburst Lichen  
  Alfredo Colon
8/15/2019

Location: Woodbury, Minnesota

Pin-cushion Sunburst Lichen  
           
           
 
MinnesotaSeasons.com Sightings
 
 

 

 

 

 

Binoculars


Created: 5/13/2019

Last Updated:

About Us | Privacy Policy | Contact Us | © 2022 MinnesotaSeasons.com. All rights reserved.