| Cladonia amaurocraea | |
|---|---|
 | |
| in Wells Gary region, British Columbia | |
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Cladoniaceae |
| Genus: | Cladonia |
| Species: | C. amaurocraea |
| Binomial name | |
| Cladonia amaurocraea | |
| Synonyms [2] | |
| |
Cladonia amaurocraea, commonly known as the quill lichen or the quill cup lichen, [3] is a species of fruticose, cup lichen in the Cladoniaceae family.
The lichen was first described scientifically as Capitularia amaurocraea in 1810. It was transferred to the genus Cladonia in 1887. [4] It is commonly known as quill lichen. [5]
The thallus of Cladonia amaurocraea comprises tall (15–100 mm high) and slender podetia that are irregularly or dichotomously branched. These podetia have a smooth, yellowish-green surface that is often mottled with patches of green and white. They either form a pointy tip, or a narrow cup that is either closed or has a narrow opening. The cortex contains usnic acid, while the medulla has barbatic acid. [5]
Cladonia amaurocraea is found in boreal forests, where it typically grows on talus deposits between boulders and on rocky ground. In North America, it is widespread throughout Canada and Alaska. [5]
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