''Peltigera praetextata'', or the scaly dog pelt lichen, is a

foliose A foliose lichen is a lichen with flat, leaf-like , which are generally not firmly bonded to the substrate on which it grows. It is one of the three most common lichen growth forms, growth forms of lichens. It typically has distinct upper and lo ...

lichen native to North America, Europe, and Asia. It is defined by small belly-button-like growths calle
phyllidia
on its edges and centre.

Characteristics

''Peltigera praetextata'' has flat lobes up to long, and often forms circular growth patterns. It is dark green when wet, often with a reddish centre, and greyish when dry. It is tomentous, or covered with fine hairs. It does not reproduce

vegetatively Vegetative reproduction (also known as vegetative propagation, vegetative multiplication or cloning) is a form of asexual reproduction occurring in plants in which a new plant grows from a fragment or Cutting (plant), cutting of the parent pl ...

using

isidia An isidium (plural: isidia) is a tiny, wart- or finger-like outgrowth on the thallus surface of certain lichen species. It is one of two principal types of vegetative reproduction, vegetative reproductive structures in lichens, the other being ...

soredia Soredia are common reproduction, reproductive structures of lichens. Lichens asexual reproduction, reproduce asexually by employing simple fragmentation and production of soredia and isidia. Soredia are powdery propagules composed of fungus, fung ...

like most lichens, but usin
phyllidia
It is often fertile as well, with round to saddle-shaped red apothecial discs.

Ecology

Although often found over moss or tree bark, ''P. praetextata'' may also be found on bare soil. It is common throughout temperate and boreal ecosystems.

References

praetextata Lichen species Lichens described in 1826 Lichens of North America Lichens of Europe Lichens of Asia {{Lecanoromycetes-stub