Plants of the Gila Wilderness
Presented in Association with the
Western New Mexico University Department
of Natural Sciences
Peltigera collina (Ach.) Schrader
Tree Pelt
Peltigera collina is a large foliose lichen that is loosely attached to its substrate. Wet or dry, it is brown in color. The undersurface has a network of low, relatively broad brown veins. Apothecia are uncommon. According to Brodo et al., "This is the only Peltigera with marginal soredia". The undersurface is white with wide brown veins and bundles of dark brown to black rhizoids, but no well-organized lower cortex. We found Peltigera collina at middle elevation in mixed conifer forest on a mossy outcrop.
Please click on an image for a larger file.
Peltigera collina, on moss covered boulder, photo Russ Kleinman & Karen Blisard, Pinos Altos Range, McMillen Campground, September 20, 2022
Peltigera collina, habit among moss (Hedwigia ciliata), photo Russ Kleinman & Karen Blisard, Pinos Altos Range, McMillen Campground, September 20, 2022
Peltigera collina, closeup of thallus, photo Russ Kleinman & Karen Blisard, Pinos Altos Range, McMillen Campground, September 20, 2022
Peltigera collina, field macro of thallus, photo Russ Kleinman & Karen Blisard, Pinos Altos Range, McMillen Campground, September 20, 2022
Peltigera collina, field macro of thallus with obvious marginal soralia and soredia, photo Russ Kleinman & Karen Blisard, Pinos Altos Range, McMillen Campground, September 20, 2022
Peltigera collina, undersurface of thallus, photo Russ Kleinman & Karen Blisard, Pinos Altos Range, McMillen Campground, September 20, 2022
Peltigera collina, photomicrograph of marginal soredia, photo Russ Kleinman & Karen Blisard, Pinos Altos Range, McMillen Campground, September 20, 2022
Peltigera collina, photomicrograph of thallus section (upper surface to the right), photo Russ Kleinman & Karen Blisard, Pinos Altos Range, McMillen Campground, September 20, 2022
Peltigera collina, photomicrograph of soredia, photo Russ Kleinman & Karen Blisard, Pinos Altos Range, McMillen Campground, September 20, 2022
Peltigera collina, photomicrograph of bundled Nostoc strands, photo Russ Kleinman & Karen Blisard, Pinos Altos Range, McMillen Campground, September 20, 2022
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