| Punctelia subflava | |
|---|---|
 | |
| In New Zealand | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Punctelia |
| Species: | P. subflava |
| Binomial name | |
| Punctelia subflava | |
| Synonyms [1] | |
Punctelia subflava is a species of foliose lichen in the family Parmeliaceae that occurs in Australia.
The lichen was first formally described in 1847 as Parmelia subflava by botanist Thomas Taylor. The type specimen, described from the herbarium collection of William Borrer, was collected on Tasmania (called Van Diemen's Land in the original publication). Taylor compared it to the common species Parmelia sulcata , noting that it was smaller, and had neither a reticulated surface nor the retuse lobes (having an obtuse or rounded apex with a shallow notch) characteristic of that widespread species. [2] John Elix and Jen Johnston transferred Parmelia subflava to the genus Punctelia in 1988. [3] Several years earlier, David Galloway and Elix had proposed Parmelia subflava to be synonymous with Punctelia rudecta . [4] It is now known that Punctelia rudecta is a Northern Hemisphere species and does not occur in Australasia. [5]
Identical in secondary chemicals, and similar in appearance to Punctelia rudecta, Punctelia subflava can be distinguished from that species by the form of the pseudocyphellae (sparse and point-like), the thickness of the thallus (thin and fragile), and the morphology of the isidia (always dorsiventral). [3] The lecanoric acid derivative 5-chlorolecanoric acid occurs in this species. [6]
Punctelia subflava is listed as "Extinct" on the schedules of the Tasmanian Threatened Species Protection Act 1995. [7]
Parmelia is a genus of medium to large foliose (leafy) lichens. It has a global distribution, extending from the Arctic to the Antarctic continent but concentrated in temperate regions. There are about 40 species in Parmelia. In recent decades, the once large genus Parmelia has been divided into a number of smaller genera according to thallus morphology and phylogenetic relatedness.
Myelochroa is a genus of foliose lichens in the family Parmeliaceae. They are commonly known as axil-bristle lichens. It was created in 1987 to contain species formerly placed in genus Parmelina that had a yellow-orange medulla due to the presence of secalonic acids. Characteristics of the genus include tightly attached thalli with narrow lobes, cilia on the axils, and a rhizinate black lower surface. Chemical characteristics are the production of zeorin and related triterpenoids in the medulla. Myelochroa contains about 30 species, most of which grow on bark. The genus has centres of distribution in Asia and North America.
Flavopunctelia is a genus of foliose lichens in the family Parmeliaceae. The genus contains species that are widespread in temperate and tropical areas. The genus is characterised by broad, yellow-green lobes, point-like (punctiform) pseudocyphellae on the thallus surface, and bifusiform conidia. All species contain usnic acid as a major secondary chemical in the cortex. Flavopunctelia was originally conceived as a subgenus of Punctelia by Hildur Krog in 1982; Mason Hale promoted it to generic status in 1984.
Flavoparmelia is a genus of foliose lichens in the family Parmeliaceae. Because of their appearance, they are commonly known as greenshield lichens. The widely distributed genus contains 32 species. It was circumscribed by American lichenologist Mason Hale in 1986 to contain 17 former Pseudoparmelia species with broad lobes, usnic acid in the cortex, and isolichenan in the cell walls.
Canoparmelia is a genus of lichen-forming fungi in the family Parmeliaceae. The widespread genus contains about 35 species. Canoparmelia, a segregate of the parmelioid lichen genus Pseudoparmelia, was circumscribed by John Elix and Mason Hale in 1986.
Punctelia is a genus of foliose lichens belonging to the large family Parmeliaceae. The genus, which contains about 50 species, was segregated from genus Parmelia in 1982. Characteristics that define Punctelia include the presence of hook-like to thread-like conidia, simple rhizines, and point-like pseudocyphellae. It is this last feature that is alluded to in the vernacular names speckled shield lichens or speckleback lichens.
Relicina is a genus of foliose lichens belonging to the large family Parmeliaceae. It contains 59 species.
Xanthoparmelia is a genus of foliose lichens in the family Parmeliaceae. This genus of lichen is commonly found in the United States, as well as Australia, New Zealand and Ecuador.
Psiloparmelia is a genus of lichen belonging to the family Parmeliaceae. It contains 13 Southern Hemisphere species, most of which are found growing on rocks at high elevations in South America. There are several characteristic features of the genus that are used to distinguish it from the morphologically similar genera, such as Arctoparmelia, Flavoparmelia, and Xanthoparmelia. These include a dark, velvety lower thallus surface that usually lacks rhizines, a negative test for lichenan, and a high concentration of usnic acid and atranorin in the cortex.
Parmotrema austrocetratum is a species of lichen in the family Parmeliaceae. Found in Australia and New Zealand, it was described as new to science in 1988 by John Elix and Jen Johnston. The lichen, which can grow on either bark or rock, is light grey in colour, measures 6–12 cm (2.4–4.7 in) in diameter, and is loosely attached to its substrate. It is common on trees and rocks in coastal and hinterland areas along the subtropical and tropical east coast of Australia, as well as the North Island of New Zealand.
Parmotrema adspersum is a species of lichen in the family Parmeliaceae. It was originally described as a species of Parmelia by Edvard August Vainio in 1907. John Elix transferred it to Parmotrema in 2002, reasoning that its thick-walled ascospores are typical of that genus. Parmotrema adspersum is common in Thailand and the Philippines.
Punctelia nebulata is a species of foliose lichen in the family Parmeliaceae. Found in Australia, it was formally described as a new species in 1988 by lichenologists John A. Elix and Jen Johnston. The type was collected in New South Wales, on a roadside north of Gilgandra. The lichen grows on Callitris trees in semi-arid, inland regions of southern Australia.
Punctelia subalbicans is a species of foliose lichen in the family Parmeliaceae. It is found in Australia and New Zealand, where it grows on the bark of various tree species.
Punctelia punctilla is a species of foliose lichen in the family Parmeliaceae. It is found in Africa, South America, and North America, where it grows on bark and on rocks. The main characteristics that distinguish Punctelia punctilla from other species of Punctelia are the presence of isidia on the thallus surface, a pale brown thallus undersurface, and the presence of lecanoric acid in the medulla.
Flavopunctelia flaventior is a species of foliose lichen in the family Parmeliaceae. It was first formally described as a new species by James Stirton in 1877 as Parmelia flaventior. In 1982, Hildur Krog transferred it to the subgenus Flavopunctelia of her newly circumscribed genus Punctelia, created to contain Parmelia species with punctate (point-like) pseudocyphellae. Mason Hale raised this subgenus to generic status a couple of years later, setting Flavopunctelia flaventior as the type species of the new genus. The lichen is commonly known as the speckled greenshield. Flavopunctelia flaventior occurs in Asia, Europe, East Africa, North America, and South America.
Punctelia novozelandica is a species of foliose lichen in the family Parmeliaceae. Found in New Zealand, it was formally described as a new species in 1988 by John Alan Elix and Jen Johnston. The type specimen was collected in Port Hills, Banks Peninsula (Canterbury), where it was found growing on moist rock ledges in a remnant forest. The lichen grows on both rocks and tree bark in cool temperate podocarp forests on both islands of New Zealand. It is quite similar in appearance to Punctelia subflava, but is distinguished from that species by the black thallus undersurface.
Punctelia pseudocoralloidea is a species of foliose lichen in the family Parmeliaceae. It is found in Australia, where it grows on bark and on wood.
Punctelia stictica is a species of foliose lichen in the family Parmeliaceae. It is widely distributed lichen, recorded in Africa, Europe, North America, South America, and Greenland. It is typically found growing on rocks.
Punctelia borreri is a species of foliose lichen in the family Parmeliaceae. It is a common and widely distributed species, occurring in tropical, subtropical, and temperate regions of Africa, Asia, Europe, North America, Oceania, and South America. The lichen typically grows on bark of deciduous trees, and less commonly on rock. Some European countries have reported increases in the geographic range or regional frequency of the lichen in recent decades, attributed alternatively to a reduction of atmospheric sulphur dioxide levels or an increase in temperatures resulting from climate change.
Parmelia protosignifera is a species of foliose lichen in the large family Parmeliaceae. Found in Australasia, it was described as a new species in 1988 by lichenologists John Elix and Jen Johnston. The type specimen was collected on sheltered granite ledges in Eucalyptus woodland on the eastern slopes on Tinderry Peak in New South Wales. It has also been collected in Victoria, as well as South Island and Stewart Island of New Zealand.