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Lattice Tube Lichen - Hypogymnia occidentalis
General Description
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Range Comments
In Montana, Lattice Tube Lichen is common and locally abundant on wood and bark in moist to mid-elevations forests in western Montana (McCune et al. 2014). It is most common below elevations of 4,291 feet (1,500 meters) in Montana; however, it has been found at elevations around 6,234 feet (1900 meters) (McCune et al. 2014).
Relative to other portions of the state, northwest Montana has a more oceanic climate, which is generally characterized by warmer, wetter winters and smaller seasonal temperature variation. East of the Continental Divide, the climate tends to be more continental, with stronger seasonal temperature variation, and in many places less total precipitation. Lattice Tube Lichen is generally considered to be a suboceanic lichen species. Thus, the species is more common west of the Continental Divide, and rather rare in forests east of the Divide (McCune 2014).
Observations in Montana Natural Heritage Program Database
Number of Observations: 25
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Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Stewardship Responsibility
Threats or Limiting Factors
Threats are not documented or are unknown. However, it would be informative to document the occurrences of Lattice Tube Lichen relative to changes in the climate and in forest turnover resulting from wildfires in both the eastern and western sides of the Continental Divide (Bruce McCune, personal communication).
References
- Literature Cited AboveLegend:
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McCune, B., Rosentreter, R., Spribille, T., Breuss, O., and Wheeler, T. 2014. Montana Lichens: An Annotated List. Monographs in North American Lichenology, Volume 2, Northwest Lichenologists, Corvallis, Oregon.
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?- Grenon, J.A. 2012. Epiphytic lichens, nitrogen deposition and climate in the US Northern Rocky Mountain states. M.Sc. Thesis. Bozeman, MT: Montana State University. 162 p.
- Schubloom, L.A. 1995. Lichens as air quality indicators in three areas of southwestern Montana: lichen floristics and elemental analysis. M.Sc. Thesis. Bozeman, MT: Montana State University. 130 p.
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