Cladonia squamosa

Cladonia squamosa or the dragon cup lichen[1] is a species of cup lichen in the family Cladoniaceae.[2]

Cladonia squamosa
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Cladoniaceae
Genus: Cladonia
Species:
C. squamosa
Binomial name
Cladonia squamosa
(Scop.) Hoff. (1796)
Synonyms
  • Baeomyces sparassus Ach. (1803)
  • Cenomyce sparassa (Ach.) Ach. (1814)
  • Cenomyce squamosa (Scop.) Flörke (1819)
  • Cladonia delicata var. subsquamosa Nyl. ex Leight. (1866)
  • Cladonia denticollis (Hoffm.) Fink
  • Cladonia pityrea var. subsquamosa (Nyl.) Müll. Arg. (1886)
  • Cladonia sparassa (Ach.) Hampe (1852)
  • Cladonia sparassa var. denticollis (Hoffm.) M. Choisy (1951)
  • Lichen cornutus var. squamosus (Scop.) K.G. Hagen (1782)
  • Lichen sparassus (Ach.) Sm. (1812)
  • Lichen squamosus Scop. (1772)
  • Schasmaria sparassa (Ach.) Gray (1821)

Description

The primary thallus is composed of medium-sized, crenate squamules, approximately 1.5-7mm. long, and 1-5mm. wide. The upper surface is fawn or tan to cinnamon-colored varying toward greenish grey. The apothecia are small, ranging from .5–3 mm. in diameter, and are located on the margin of the cups or at the ends of branches or proliferations. They are fawn to cinnamon-colored. The paraphyses are usually simple, sometimes thickened, and are brownish towards the apex. The hymenium is pale or pale-brownish below and brownish above. The asci are lecanoralean, with a thickened tholus. There are a usually 8 ascospores, which are oblong or oblong-obtuse to fusiform in shape, between 5-17 µm. long and 2.5-3.5 µm. wide. Conidia are falcate and 3-8 µm. long.[3][4]

Range

The species is widely distributed; it is found in Europe, North and South America, Asia, and on King George Island in Antarctica.[5][6] It grows on mosses such as Chorisodontium aciphyllum, Polytrichum strictum, Andrea gainii, and Sanionia uncinata.

Cladonia squamosa

Biochemistry

Secondary metabolites of Cladonia squamosa include barbatic acid, decarboxythamnolic acid, thamnolic acid, squamatic acid as well as various unknown or unidentified terpenes and/or terpenoids.[4][7]

References

  1. "Standardized Common Names for Wild Species in Canada". National General Status Working Group. 2020.
  2. "Dragon Horn (Cladonia squamosa)". iNaturalist. Retrieved 2021-03-27.
  3. Fink, Bruce (1907). Further Notes on Cladonias. IX. Cladonia squamosa and Cladonia subsquamosa. The Bryologist , Mar., 1907, Vol. 10, No. 2 (Mar., 1907), pp. 21-23. American Bryological and Lichenological Society.
  4. "LIAS light - Item Descriptions". Archived from the original on 2016-03-04.
  5. Noh, Hyun-Ju; Lee, Yung Mi; Park, Chae Haeng; Lee, Hong Kum; Cho, Jang-Cheon; Hong, Soon Gyu (2020). "Microbiome in Cladonia squamosa Is Vertically Stratified According to Microclimatic Conditions". Frontiers in Microbiology. 11. doi:10.3389/fmicb.2020.00268. ISSN 1664-302X. PMC 7053493. PMID 32161575.
  6. Fink, Bruce (1907). "Further Notes on Cladonias. IX. Cladonia squamosa and Cladonia subsquamosa". The Bryologist. 10 (2): 21–23. doi:10.2307/3238499. ISSN 0007-2745. JSTOR 3238499.
  7. Culberson, Chicita F. (1970), Supplement to "Chemical and Botanical Guide to Lichen Products" The Bryologist , Summer, 1970, Vol. 73, No. 2 (Summer, 1970) p. 257, American Bryological and Lichenological Society

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