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Montana Field Guide

Montana Field Guides

Hooded Ramalina Lichen - Ramalina obtusata

Species of Concern

Global Rank: G5
State Rank: S2
* (see State Rank Reason below)

Agency Status
MNPS Threat Rank:

External Links

State Rank Reason (see State Rank above)
In Montana sporadic occurrences have been found in western Montana.
General Description
Thallus fruticose, erect or pendulous, pale greenish or tinged yellowish from usnic acid. Thallus partially hollow, perforate, small (less than 2-3 cm long), and somewhat translucent. Branches slender, delicate, and less than 1 mm wide. Soredia present beneath hooded lobe tips, often cup- or lip-shaped (McCune and Geiser 2009). Chemistry: Medulla K-, P-, and UV+ (McCune and Geiser 2009).

Species Range

Summary of Observations Submitted for Montana
Number of Observations: 13

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

On tree and shrub bark in low elevation riparian forests.


Reproductive Characteristics
Reproduces asexually from soredia.

Threats or Limiting Factors
None identified.

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Citation for data on this website:
Hooded Ramalina Lichen — Ramalina obtusata.  Montana Field Guide.  .  Retrieved on , from