Peltigera didactyla (With.) J.R. Laundon, 1984 group
| Common name | Alternating Dog-lichen |
|---|---|
| Code | PELTDID grp. |
| Field Characters | Small bipartite cyanolichen. Thalli to 5 cm across, composed of single, rounded lobes to 1-2 cm across. Lobes branching sparingly, cup-shaped, grey to brown. Often with sparse appressed, arachnoid tomentum on the lobe tips. Lower cortex lacking, lower surface covered in a network of broad veins and interstices, with simple, sparse rhizines. Apothecia red-brown to dark brown, saddle-shaped, held aloft on erect lobes in fertile morphs. Vegetative propagules present in the form of sorediate patches, forming laminal soralia. |
| Similar species |
Peltigera extenuata: rhizines flocculent, lobes more commonly divided (polyphyllous), rarely fertile.
Peltigera castanea: upper cortex often shiny, sparsely tomentose or lacking tomentum, rhizines forming hedgerows, rarely fertile. |
| Ecology | Typically on mineral soil and associated mosses in early successional habitats like clearings, roadsides, and recent burns. Present in all natural regions and most habitat types. |
| Chemistry | Not investigated. |
| Molecular support |
High, represented by 3 well-supported molecular clades. We continue to work to understand how these clades differ morphologically and ecologically. |
| Links | |
| Gallery |
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- Peltigera didactyla group
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- Peltigera didactyla group
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- Peltigera didactyla group
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- Peltigera didactyla temporary pelt near Athabasca, Alberta during summer protocol training
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- Peltigera didactyla temporary pelt near Athabasca, Alberta during summer protocol training
