Species
Parmelia sulcata (Shield lichen)
Parmelia sulcata. Photo: (c) mister_bumble, some rights reserved (CC BY)
Net-marked parmelia (Parmelia sulcata), or shield lichen, is a foliose lichen in the family Parmeliaceae. It is very tolerant of pollution and has a cosmopolitan distribution, making it one of the most common lichens. It harbours a unicellular Trebouxia green algal symbiont.
Where in Humboldt
























Leaflet © OpenStreetMap, © iNaturalist