Peltigera collina (Ach.) Schrad., 1801
| Common name | Tree Pelt |
|---|---|
| Code | PELTCOL |
| Field Characters | Small leafy bipartite cyanolichen. Colonies composed of shallowly lobed, rosettiform or overlapping thalli to 10 cm across. Lobes to 1 cm across, ascending, upper surface plane with slightly ruffled edges. Lacking pruina and tomentum. Cortex typically shiny, grey to brownish-grey when dry, blue-grey to dark grey when wet. Lower cortex lacking, lower surface covered in low, flat, contrasting network of broad tan to ochraceous veins and oval interstices, with sparse rhizines. Apothecia black, tightly folded like a hotdog bun, more rarely saddle-shaped. Vegetative propagules present in the form of soredia in marginal and sometimes laminal soralia. |
| Similar species |
Peltigera neckeri: larger, more common, lacking soredia, rarely on tree boles, more commonly on downed wood, tree bases and moss. |
| Ecology | Peltigera collina is most common on the boles of large Populus in old, wet forests, but it can also be found on rock in similar forests. Rare in foothills, mountain, and boreal foresets and shield sites, absent from parkland and grassland. |
| Chemistry | Not investigated. |
| Molecular support |
High, represented by 6 specimens in a single well-supported molecular clade. Additional specimens that are more variable genetically require further investigation. |
| Links | |
| Gallery |
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- Peltigera collina, Lesser Slave Lake Provincial Park, AB
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- Peltigera collina, on Populus, Big Mountain Creek Provincial Recreation Area, Grande Prairie region, AB
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- Peltigera collina, Lesser Slave Lake Provincial Park, AB
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- Peltigera collina, genetically confirmed ABMI collection
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- Peltigera collina, upper surface, PMAE collection, AB
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- Peltigera collina, lower surface, PMAE collection, AB
