Fingered Shingle Lichen - Parmeliella triptophylla
Black-bordered Shingle Lichen,
State Rank Reason (see State Rank above)
Locally rare when found.
Thallus squamulose to small foliose, though often the thallus partially dissolves into granules. Upper surface gray-brown to nearly black; hypothallus black, conspicuous; Photobiont is blue-green. Thallus with flattened lobules and isidia that occur laminal on the surface; these often develop thickly and obscure the thallus. Marginal lobes are not much enlarged; apothecia rare McCune and Geiser 2009
and (McCune and Goward 1995).
Widespread in cool temperate parts of the northern hemisphere (Jorgensen 2000).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
In moist environments at tree bases, on rocks, and on moss over rocks.
Reproduces asexually by isidia.
Threats or Limiting Factors