Ramalina dilacerata
Ramalina dilacerata | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Fungi |
Division: | Ascomycota |
Class: | Lecanoromycetes |
Order: | Lecanorales |
Family: | Ramalinaceae |
Genus: | Ramalina |
Species: | R. dilacerata
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Binomial name | |
Ramalina dilacerata (Hoffm.) Hoffm.
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Ramalina dilacerata, commonly known as punctured ribbon lichen,[1] is a lichen species belonging to the family Ramalinaceae. The species was first described in 1796 as Lobaria dilacerata Hoffm., and later transferred to the genus Ramalina by Hoffmann in 1825.[2]
Description
Ramalina dilacerata exhibits a
The branches are less than 1 mm wide, inflated and hollow (fistulose),
Apothecia are frequently present,
The asci are 8-spored, clavate, and of the Bacidia-type.[2][3] The ascospores are 1-septate, hyaline, and shortly fusiform, measuring 12-15 x 4-6 μm.[2][3]
The
Chemistry
Spot tests on the thallus and medulla yield negative results for K, C, KC, and P.[2]
The thallus of Ramalina dilacerata contains usnic acid in the cortex, while the medulla is characterized by the presence of sekikaic acid, without any detectable amounts of homosekikaic or divaricatic acids.[2]
Distribution and ecology
The geographical range of R. dilacerata extends across North America, stretching from Alaska down to California and westward of the Cascade Mountain range.[1] This lichen can also be found further inland, as far as western Montana.[1] It thrives primarily in riparian forests and shrublands at low elevations, though it may occasionally occur in areas with strong oceanic influences, east of the Cascades.[1]
In
Ramalina dilacerata typically colonizes the bark and twigs of acid-barked trees, especially conifers. More rarely, this lichen may also grow on lignum (woody material) in highly humid environments.[2][3]
Conservation status
Globally, Ramalina dilacerata is ranked as G5 by NatureServe, indicating that it is "secure" and commonly encountered throughout its range.[1]
In Canada, the species is classified as N5, meaning it is "common, widespread, and abundant" at the national level. At the provincial scale, its status varies from S1S3 (critically imperiled to vulnerable) in
Within the United States, R. dilacerata has not been formally assessed, but it is known to occur in the state of Montana.[1]
In Italy, R. dilacerata is included in the national red list of epiphytic lichens as "Vulnerable" due to its extreme rarity in the
Synonyms
Synonyms for this species include:[2]
- Fistulariella dilacerata (Hoffm.) Bowler & Riefner
- Ramalina minuscula Nyl.
References
- ^ a b c d e f g h "Ramalina dilacerata". NatureServe. Retrieved 2024-03-18.
- ^ a b c d e f g h i j k l m n o p Nimis, P. L. "Ramalina dilacerata (Hoffm.) Hoffm". ITALIC - The Information System on Italian Lichens. Version 7.0. University of Trieste, Dept. of Biology. Retrieved 2024-03-18.
- ^ a b c d e f g h "Consortium of Lichen Herbaria - Ramalina dilacerata". lichenportal.org. Retrieved 2024-03-18.
- ^ "Species Summary". a100.gov.bc.ca. Retrieved 2024-03-23.