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Candelariella vitellina

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Candelariella vitellina
Candelariella vitellina on granite,
magnification 30x
Scientific classification
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C. vitellina
Binomial name
Candelariella vitellina
(Ehrh.) Müll.Arg. (1894)
Synonyms
  • Lichen vitellinus Ehrh. (1785)
  • Patellaria vitellina Hoffm. (1794)

Candelariella vitellina is a common and widespread green-yellow to orange-yellow crustose areolate lichen that grows on rock, wood, and bark, all over the world.[1] It grows on non-calcareous rock, wood, and bark.[1] It often has tiny lobate areoles in the shape of lion claws.[1] The areoles may be flat or convex.[1] Its sexual reproduction structures (apothecia) are a 0.35–1.0 mm-wide disc, darker yellow than the thallus, rimmed with thallus-like tissue lecanorine, flat but becoming convex with age.[1] Lichen spot tests are K+ reddish, KC-, and C-.[1] It produces calycin, pulvinic acid, pulvinic dilactone and vulpinic acid as secondary metabolites.[1]

In California, it prefers growing on granite, but can also be found on wood (rarely on bark) and other kinds of rock.[2]: 251 

Candelariella vitellina looks like a miniature version of C. rosulans.[1] It can be distinguished by C. vitanela having a visible exciple (the rim around the apothecia disc), which C. rosulans does not have.[1] It is usually much larger and thicker than the similar C. lutella.[1]

References

  1. ^ a b c d e f g h i j Lichen Flora of the Greater Sonoran Desert Region. Vol 2, Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.) 2001, [1]
  2. ^ Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2