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COLLEMA TENAX

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From Wikipedia, the free encyclopedia

Species of lichenised fungi in the family Collemataceae



Collema tenax
Conservation status

Apparently Secure  (NatureServe)
Scientific classification Kingdom:
Fungi
Division:
Ascomycota
Class:
Lecanoromycetes
Order:
Lecanorales
Family:
Collemataceae
Genus:
Collema
Species:
C. tenax
Binomial name Collema tenax

(Sw.) Ach.

Collema tenax is a species of lichen known by the common names jelly lichen,
black lichen, and desert lichen. It occurs in Arctic and temperate regions in
the Northern Hemisphere.[1] It is very common in North America, and it is
present in Europe, Asia, and Africa. It is the most widely distributed
Collema.[2]

This lichen has a thick black or dark green gelatinous thallus which is variable
in size. It is generally 1 to 3 centimeters wide.[2] It contains a symbiont, the
cyanobacterium Nostoc commune. It reproduces when pieces of the thallus break
off, or when isidia, soredia, and apothecia are produced.[1] It is tolerant of
desiccation, shrinking when dry and swelling up when water is present.[2]

This lichen is terricolous, growing on the soil surface. It is an indicator of
basic soils, and is often found on gypsum-rich and other calcareous soils. It is
a common component of cryptobiotic soil crusts, for example, in the dry regions
of the western United States. It fixes nitrogen, increasing the nitrogen levels
in the soil.[1]


REFERENCES

[edit]
 1. ^ a b c Matthews, Robin F. 1993. Collema tenax. In: Fire Effects Information
    System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky
    Mountain Research Station, Fire Sciences Laboratory.
 2. ^ a b c Lange, O. L., et al. (1998). Photosynthesis of the cyanobacterial
    soil-crust lichen Collema tenax from arid lands in southern Utah, USA: Role
    of water content on light and temperature responses of CO2
    exchange.[permanent dead link] Functional Ecology 12 195-202.


EXTERNAL LINKS

[edit]
 * The Nature Conservancy
 * USDA Plants Profile


Taxon identifiers
Collema tenax
 * Wikidata: Q5147028
 * BioLib: 165175
 * CoL: X34P
 * EPPO: CLEMTE
 * FEIS: colten
 * GBIF: 5260643
 * iNaturalist: 120382
 * IRMNG: 10400972
 * ITIS: 191371
 * NatureServe: 2.126578
 * NBN: NBNSYS0000018453
 * NCBI: 586069
 * NZOR: 25ab0142-3451-4833-90c2-3002bdbf07a8
 * Open Tree of Life: 376241
 * PLANTS: COTE60
 * Tropicos: 100386688

Lichen tenax
 * Wikidata: Q59506671
 * CoL: 727Y4
 * Fungorum: 394545
 * GBIF: 3423390
 * IRMNG: 11059808
 * MycoBank: 394545
 * NZOR: 89038805-ac30-4818-a27a-9410ff87fa09
 * Tropicos: 100386687

Retrieved from
"https://en.wikipedia.org/w/index.php?title=Collema_tenax&oldid=1123648055"
Categories:
 * NatureServe apparently secure species
 * Lichens of the Arctic

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 * This page was last edited on 24 November 2022, at 22:18 (UTC).
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