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Peltigerales is an order of lichen-forming fungi belonging to the class Lecanoromycetes in the division Ascomycota. The taxonomy of the group has seen numerous changes; it was formerly often treated as a suborder of the order Lecanorales. It contains two suborders, eight families and about 45 genera such as Lobaria and Peltigera. [1] [2] [3]
Unlike green algal lichens, where photobionts typically form distinct evolutionary lineages adapted to lichen symbiosis, cyanolichen photobionts are more closely related to free-living cyanobacteria. Rather than forming tightly co-evolving partnerships, cyanobacterial symbionts in cyanolichens are often recruited from environmental populations ...
Teloschistes chrysophthalmus, sometimes referred to as the gold-eye lichen or golden-eye, is a fruticose lichen with branching lobes. Their sexual structures, apothecia , are bright-orange with spiny projections ( cilia ) situated around the rim.
This group of lichens has a broad range of physical forms – from thin, encrusting to leaf-like or even bushy formations. [ 1 ] [ 57 ] Although it is an atypical growth form for the Teloschistaceae, members of genus Ioplaca are somewhat umbilicate , meaning they have a somewhat circular, leafy thallus attached to the substrate at a single point.
The Lecideaceae are a family of lichen-forming fungi in the order Lecideales.It contains about 30 genera and roughly 250 species.A major distinguishing characteristic of the family is the lecanoroid form of the fruiting bodies: typically circular, dark, and without a thalline margin.
The upper surface of the lobes, which generally measure 10–25 mm (0.4–1.0 in) across, have a fuzzy tomentum, especially near the margins. The lichen typically grows on soil, in woodlands, fields, and sandy areas [3] The cyanobiont Nostoc associates with Peltigera canina, and resembles the species N. sphaericum and N. punctiforme. [4]
Lichens with a cyanobacteria as the photosynthetic partner, like this Peltigera collina, can fix nitrogen. [26] Symbiosis in lichens – the relationship between the lichen partners can be complicated; while generally mutualistic, sometimes it is not. Recent research also shows other partners, including bacteria and "accessory" fungi, may be ...
Usnea lambii is a small species of fruticose lichen in the family Parmeliaceae. [2] It was first formally described as a new species in 1954 by Henry Imshaug.It has a bipolar distribution, that is, it occurs at both of Earth's polar regions.