Cetrelia is a genus of leafy lichens in the large family Parmeliaceae. They are commonly known as sea-storm lichens, alluding to the wavy appearance of their lobes. The name of the genus, circumscribed in 1968 by the husband and wife lichenologists William and Chicita Culberson, alludes to the former placement of these species in the genera Cetraria and Parmelia.
Menegazzia terebrata is a species of foliose lichen found scattered across many continents, including North America, South America, Europe, Africa, and Asia.
Esslingeriana is a fungal genus in the family Parmeliaceae. The genus is monotypic, containing the single foliose lichen species Esslingeriana idahoensis, commonly known as the tinted rag lichen. It is found in northwestern North America.
Platismatia wheeleri is a species of foliose lichen in the family Parmeliaceae. Found in western North America, it is characterized by its whitish, smooth thallus and asexual reproduction through soredia. This lichen species is primarily found in western intermontane North America, from southern British Columbia to Washington, Idaho, and Oregon. It has also been discovered in southern California and the Tatra Mountains of Slovakia.
Hypogymnia congesta is a rare species of foliose lichen in the family Parmeliaceae. Found in China, it was formally described as a new species in 2003. The lichen grows on the bark and wood of conifers and bamboo. Hypogymnia congesta has a brown to brownish-grey foliose thallus measuring up to 8 cm (3.1 in) long or broad, with a cartilage-like texture. The lichen is chemically distinct, containing physodic acid and virensic acid; the latter substance is otherwise unknown from genus Hypogymnia.
Punctelia guanchica is a species of foliose lichen in the family Parmeliaceae that is only known from the Canary Islands. It is similar in appearance and morphology to the North American Punctelia rudecta, and was historically misidentified as that species until molecular phylogenetic evidence showed it to be a distinct species. It differs in having thicker isidia that develop from the centre of the pseudocyphellae, and it mainly grows on rocks.
Punctelia hypoleucites, commonly known as the southwestern speckled shield lichen, is a species of foliose (leafy) lichen in the family Parmeliaceae. First formally described by Finnish botanist William Nylander as a species of Parmelia, it was transferred to the genus Punctelia in 1982. The lichen is found in Africa, North America, and South America, where it grows on the bark of both hardwood and coniferous trees. Its greenish-grey thallus is covered with tiny white pseudocyphellae – minute holes in the thallus surface that facilitate gas exchange. Some macroscopic features that help distinguish this species from other related members of the genus include the presence and the structure of the apothecia, the absence of asexual surface propagules, and the light brown color of the thallus undersurface. Chemically, the presence of lecanoric acid in the medulla and atranorin in the cortex help distinguish it from lookalikes.
Punctelia graminicola is a species of foliose (leafy) lichen in the family Parmeliaceae. It grows on rocks, and, less frequently, on bark in North America, South America, and East Africa. It has a blue-grey thallus measuring up to about 15 cm (6 in), covered with tiny pores called pseudocyphellae. Sometimes the lichen forms small lobes that project out from the surface. Fruiting bodies are uncommon in this species; if present, they resemble small cups with a brown internal disc measuring 3–10 mm (0.1–0.4 in) in diameter. A lookalike species, Punctelia hypoleucites, is not readily distinguishable from Punctelia graminicola by appearance or habitat alone; these species can only be reliably differentiated by examining the length of their conidia.
Cetrelia chicitae is a species of foliose lichen in the family Parmeliaceae. It is found in eastern Asia, North America, and Europe, where it grows on mossy rocks and tree trunks.
Platismatia formosana is a species of corticolous (bark-dwelling), foliose lichen in the family Parmeliaceae. Found in the mountains of Taiwan, it was first formally described as a species of Cetraria in 1933 by Alexander Zahlbruckner. William and Chicita Culberson transferred it to the genus Platismatia in 1968. The species epithet formosana refers to its distribution, as "Formosa" is the name formerly used in Western literature to refer to Taiwan. It contains the lichen products atranorin, caperatic acid, and an unidentified yellow pigment.
Platismatia erosa is a species of corticolous (bark-dwelling), foliose lichen in the family Parmeliaceae. Found in Asia, it was formally described as a new species in 1968 by William and Chicita Culberson. The species epithet erosa refers to the "eroded" quality of the reticulations on the upper thallus surface.
Platismatia lacunosa is a species of corticolous (bark-dwelling), foliose lichen in the family Parmeliaceae. Known predominantly from western North America, it reproduces primarily through sexual means, which is uncommon in the genus. The species is distinguished by its ridged surface and large, folded apothecia.
Platismatia interrupta is a species of foliose lichen in the family Parmeliaceae. Found in southern Russian Far East, and Japan, it was formally described as a new species in 1968 by William and Chicita Culberson. The species epithet interrupta refers to the indistinct and discontinuous reticulation of the upper thallus surface. The lichen of one of the most common foliose macrolichens in Japan, particularly at high elevations, where it grows on tree trunks and on boulders. The authors called it the "Far Eastern equivalent" of the common and widespread Platismatia glauca, which is absent in Asia.
Platismatia stenophylla is a species of corticolous (bark-dwelling), foliose lichen in the family Parmeliaceae. It is found in western North America, from Vancouver Island south to central California, usually close to a shore. The lichen is distinguished from others in its genus by its narrow, linear lobes and primarily sexual reproduction.
Platismatia regenerans is a species of corticolous (bark-dwelling), foliose lichen in the family Parmeliaceae. Found in Borneo, it was formally described as a new species in 1968 by William and Chicita Culberson. The type specimen was collected by Mason Hale from the Kinabalu National Park in Sabah, at an elevation of 2,000 m (6,600 ft). The species epithet refers to the "regenerative lobulae" that occur on older parts of the thallus.
Platismatia herrei is a species of corticolous (bark-dwelling), foliose lichen in the family Parmeliaceae. It was first formally described as a species of Cetraria in 1968 by lichenologist Henry Imshaug. William and Chicita Culberson transferred it to the genus Platismatia in 1968. The lichen is found in western North America, ranging from southern Alaska to central California. It is distinguished from other members of its genus by the isidia that fringe the edges of its linear lobes; the Culbersons described it as "one of the most beautiful and intricately formed species in the genus".
Platismatia glauca is a common and widespread species of corticolous (bark-dwelling), foliose lichen in the family Parmeliaceae.
Pseudevernia consocians is a species of lichen in the family Parmeliaceae. It is found in both North America and Central America. Some characteristic features of Pseudevernia consocians are its well-developed, numerous isidia, relatively narrow lobes, and the presence of the lichen product lecanoric acid.
Tuckermannopsis orbata, commonly known as the variable wrinkle lichen, is a species of foliose lichen in the family Parmeliaceae. It is a small cetrarioid lichen, an informal growth form category that denotes lichens with erect, foliose thalli, and apothecia and pycnidia on the margins of the ruffled lobes. Tuckermannopsis orbata is found in Asia and North America, growing primarily on the wood and bark of mostly birch and coniferous tree branches and twigs.
Tuckermannopsis ciliaris is a species of corticolous (bark-dwelling), foliose lichen in the family Parmeliaceae. It was first described by Erik Acharius in 1810, initially classified in the genus Cetraria.The species was later reclassified into the genera Nephromopsis and then Tuckermannopsis, with some researchers proposing that certain cetrarioid genera, including Tuckermannopsis, should be merged into Nephromopsis. However, this suggestion was disputed, and both names, Tuckermannopsis ciliaris and Nephromopsis ciliaris, are used in recent literature to refer to this species.
