title: Acarospora americana
text: # Acarospora americana
  
  Acarospora americana is a dark brown to black verruculose to areolate or squamulose crustose lichen with deeply immersed reddish to blackish-brown apothecia found in the Sierra Nevada and other southern California mountain $ranges.^{:221}$ Lichen spot tests are all $negative.^{:221}$
  
  