Web4 rows · Included. The current Computer Vision Model knows about this taxon, so it might be included in ... Punctelia rudecta, commonly known as the rough speckled shield or the speckleback lichen, is a North American species of foliose lichen in the family Parmeliaceae. This species can be readily identified by the light color of the thallus underside, the relatively large lobes at the edges of the thallus, and the tiny white … See more Swedish lichenologist Erik Acharius described the lichen as a new species in 1814 as Parmelia rudecta. The type specimen was collected by American clergyman and botanist Gotthilf Heinrich Ernst Muhlenberg. … See more Punctelia rudecta has a temperate distribution in North America. Although the range maps included in some popular North American lichen field guides suggest that it does not … See more Based on the frequency of Punctelia rudecta in heavily polluted areas, it is considered a relatively pollution-tolerant species, although it is sensitive to ambient sulfur dioxide (SO2), … See more The thallus of Punctelia rudecta ranges in color from dark greenish-gray to almost blue-gray; it tends to be more gray-greenish when fresh, and more brown-yellowish when dry. The thallus has a relatively tight attachment to its substrate. The lobes … See more Punctelia rudecta has an annual radial (i.e., expanding outward from the center) growth rate of about 5 mm (0.2 in) per year, similar to other … See more Punctelia rudecta can be used to create a dye by a color-extraction with ammonia as a solvent. A pink color is obtained using this method. See more
Consortium of Lichen Herbaria - Punctelia rudecta
WebPunctelia guanchica is a species of foliose lichen in the family Parmeliaceae that is only known from the Canary Islands. ... which is known colloquially as the "rough speckled shield lichen". This species occurs in North America and differs in having isidia developing from the periphery of pseudocyphellae, ... WebNov 3, 2024 · The foliose lichens you’re most likely to see on a tree in the garden are the common greenshield (Flavoparmelia caperata) and the rough speckled shield (Punctelia … humanity events
Shield Lichens at West Woods, Geauga County
WebPunctelia rudecta, commonly known as the rough speckled shield or the speckleback lichen, is a North American species of foliose lichen in the family Parmeliaceae. This species can … WebOct 7, 2024 · The rough speckled shield lichen is one of 20,000 species of lichen, which together make up 6% of Earth’s entire surface (specifically in the arctic tundra and over large expansions of rocks). It is described as a symbiotic relationship between fungi and a photosynthetic partner (algae or cyanobacteria). WebFeb 15, 2024 · Description. Eastern Speckled Shield Lichen occurs across North America but is especially common in central United States. It is very common in Minnesota. It is … humanity ethics