DigitalNatura.Org - Opegrapha atra Pers y Pertusaria amara (Ach.) Nyl. http://digitalnatura.org/details.php?image_id=17515 Sun, 12 Apr 2026 07:35:09 GMT http://digitalnatura.org/data/thumbnails/91/Opegrapha_atra_copia.jpg Opegrapha atra Pers y Pertusaria amara (Ach.) Nyl. http://digitalnatura.org/details.php?image_id=17515