Plants of the Gila Wilderness

Tuckermannopsis fendleri is very inconspicuous. It is found on smaller conifer branches and twigs, and is about the same color as the substrate. It is green when wet, but can be dark greenish-brown to black when dry. The lobes are only about a millimeter wide and quite finely divided with marginal lobules. The margins are also notable for strongly emergent black pycnidia. Apothecia are common and have a brownish disc and a finely lobed or toothed margin. There are no soralia or soredia.
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Tuckermannopsis fendleri, growing on small conifer twig, photo Russ Kleinman & Karen Blisard, Cherry Creek Campground, Pinos Altos Range north of Pinos Altos, April 24, 2018

Tuckermannopsis fendleri, macro, photo Russ Kleinman & Karen Blisard, Cherry Creek Campground, Pinos Altos Range north of Pinos Altos, April 24, 2018

Tuckermannopsis fendleri, photomicrograph, photo Russ Kleinman & Karen Blisard, Cherry Creek Campground, Pinos Altos Range north of Pinos Altos, April 24, 2018

Tuckermannopsis fendleri, photomicrograph showing mostly marginal emergent black pycnidia, photo Russ Kleinman & Karen Blisard, Cherry Creek Campground, Pinos Altos Range north of Pinos Altos, April 24, 2018

Tuckermannopsis fendleri, macro of white undersurface with rhizines, photo Russ Kleinman & Karen Blisard, Cherry Creek Campground, Pinos Altos Range north of Pinos Altos, April 24, 2018

Tuckermannopsis fendleri, photomicrograph showing mostly marginal black pycnidia, photo Russ Kleinman & Karen Blisard, Cherry Creek Campground, Pinos Altos Range north of Pinos Altos, April 24, 2018