Acarospora americana
| Acarospora americana | |
|---|---|
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| Species: | A. americana
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| Binomial name | |
| Acarospora americana H. Magn.
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Acarospora americana is a dark brown to black verriculous to areloate or squamulose crustose lichen with deeply immersed reddish to blackish brown apothecia found in the Sierra Nevada and other southern California mountain ranges.[1]: 221 Lichen spot test]]s are all negative.[1]: 221