Arctic Pretzel Lichen

Bryocaulon divergens (incl Cornicularia divergens)

General Status Rank: 
Secure
Common Name: 
Arctic Pretzel Lichen
Scientific Name: 
Bryocaulon divergens (incl Cornicularia divergens)
Synonyms: 
Cetraria chrysantha
Naming References: 
B121
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Taxonomy
Group: 
Lichen
Kingdom: 
Fungi
Phylum: 
Ascomycota
Class: 
Lecanoromycetes
Order: 
Lecanorales
Family: 
Parmeliaceae
Habitat
On tundra soil and vegetation, often mixed with species of Bryoria and Cetraria.
Distribution

Ecozones

Northern Arctic, Southern Arctic, Taiga Cordillera, Taiga Plains, Taiga Shield
References: 
B121

Distribution

100%; 0.6835 in B010
Score: 
G
References: 
B010
B121

Number of Occurrences

33 as Cornicularia divergens (B010); Thomson, Scotter & Ahti, 1969 (Great Slave Lake study): 9 (R196); Localities given in Ahti et al. 1973 (Lichens of the Reindeer Preserve, Northwest Territories, Canada, The Bryologist 76: 48-76): 5 (R196); Thomson 1984 maps: 38 (R196); Kaernefelt 1986: 25 (R196)
Score: 
CE
References: 
B010
R196

Area of Occupancy

Score: 
-
Threats

Intrinsic Vulnerability

Score: 
-
General Status Rank
Rank: 
Secure
Status Rank Description: 
-
S Rank: 
S4S5
Decision Process Description: 
Marsh GS Rankings (2010); Reviewed by Janet Marsh in 2015, no change
Last Updated: 
March 10, 2015

References

Ecozones

  • Brodo, I. M., Sharnoff, S. D, and Sharnoff, S. (2001) Lichens of North America. Yale University RWED Library - B121 Return

Naming

  • Brodo, I. M., Sharnoff, S. D, and Sharnoff, S. (2001) Lichens of North America. Yale University RWED Library - B121 Return

Number of Occurrences

  • Thomson JW (1984) American Arctic Lichens. Columnia University Press RWED Library Call #QK597.T5 - B010 Return
  • Goward, T. and Bjork, C. (2010) Macrolichens of the Northwest Territories: current status and future research. Unpublished report to the GNWT 15 pp plus app. Printed in binder - R196 Return

Range Extent

  • Thomson JW (1984) American Arctic Lichens. Columnia University Press RWED Library Call #QK597.T5 - B010 Return
  • Brodo, I. M., Sharnoff, S. D, and Sharnoff, S. (2001) Lichens of North America. Yale University RWED Library - B121 Return