Calicium sequoiae

Calicium sequoiae is a crustose lichen that has only been found growing on old-growth redwood trees in California.[1]:234 It is a species of stubble lichen (pin lichen, (genus Calicium) in the Caliciaceae family.[1]:234 Apothecia are white-powder coated (pruinose).[1]:234 The unusual spores have spiral ridges.[1]:234

Calicium sequoiae
Scientific classification
Kingdom:
Fungi
Division:
Ascomycota
Class:
Lecanoromycetes
Order:
Teloschistales
Family:
Caliciaceae
Genus:
Calicium
Species:
C. sequoiae
Binomial name
Calicium sequoiae
C.B.Williams & Tibell (2008)

Reaction to chemical tests
Further information: Spot tests (lichen)

The thallus reacts to chemical tests as K+ yellow, P+ orange, and the aphothecia reacts I+ blue.[1]:234

References
  1. Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2
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