Roccella is a genus of 23 species of lichens in the family Roccellaceae. The genus was circumscribed by Swiss botanist Augustin Pyramus de Candolle in...

Roccella galapagoensis is a species of fruticose lichen in the family Roccellaceae. It is endemic to the Galápagos Islands. First described by the German...

Roccella phycopsis is a species of lichen in the family Roccellaceae. A study of Roccella phycopsis in Tunisia revealed that it contains methyl orcellinate...

several organic compounds. Lichen has been used for centuries to make dyes. This includes royal purple colors derived from roccella tinctoria, also known as...

Roccella albida is a species of saxicolous (rock-dwelling), fruticose lichen in the family Roccellaceae. It is found on the Galápagos Islands. The lichen...

Roccella gracilis is a species of fruticose lichen in the family Roccellaceae. Flourishing in coastal environments, Roccella gracilia predominantly grows...

Jonica), a municipality in Calabria, Italy The lichen genus Roccella, known for the species Roccella tinctoria among others Roccellaria This disambiguation...

acidic or basic substances) called litmus is a dye extracted from the lichen Roccella tinctoria ("dyer's weed") by boiling. It gives its name to the well-known...

procedure is from The Vanishing Lichens, D H S Richardson, London, 1975. The lichens (preferably Lecanora tartarea and Roccella tinctoria) are ground in a...

Arthoniales. Roccella phycopsis (historically known as Roccella tinctoria) is a common source for litmus, a mixture of dyes extracted from lichens, and the...

chemical constituent of the lichen Roccella tinctoria. It has since been identified in a variety of other lichens including Roccella montagnei, Lobodirina cerebriformes...

compound with the formula CH3C6H3(OH)2. It occurs in many species of lichens including Roccella tinctoria and Lecanora. Orcinol has been detected in the "toxic...

parathecium in an 1898 monograph on the genus Roccella. parmelioid lichen An informal growth form category used for lichens that are mostly foliose, often closely...

amphithecium and parathecium in an 1898 monograph on the lichen genus Roccella. Some lichen species have been named in his honour: Pertusaria darbishireana...

rocks. Several rare and biogeographically significant lichens occur on Skomer, including Roccella fuciformis, a Mediterranean-Atlantic species at its northern...

from Roccella species. Many lichens have been used medicinally across the world. A lichen's usefulness as a medicine is often related to the lichen secondary...

in 1995. He proposed the genus to contain the species originally named Roccella minima by Rolf Santesson in 1944. However, the name was not validly published...

The following outline provides an overview of and topical guide to lichens. Lichens are composite organisms made up of multiple species. They comprise...

Ramalina menziesii, the lace lichen or fishnet, is a pale yellowish-green to grayish-green fruticose lichen. It grows up to a meter long, hanging from...

Expedition. The fungus grows specifically on the thallus of Roccella nigerrima, a fruticose lichen that is endemic to the Galápagos. The species epithet darbishirei...

species of lichen, commonly known as "orchella weeds", found in various parts of the world. A major source is the archil lichen, Roccella tinctoria. Orcinol...

secondary metabolite in lichens. This diterpene is found only in Vermilacinia within the Ramalinaceae, and also in Roccella (Roccellaceae). The following...

Greeks and Hebrews, and was made from a Mediterranean lichen called archil or dyer's moss (Roccella tinctoria), combined with an ammoniac, usually urine...

Lichen products, also known as lichen substances, are organic compounds produced by a lichen. Specifically, they are secondary metabolites. Lichen products...

Pentagenella is a genus of lichen-forming fungi in the family Opegraphaceae. It contains five species. Pentagenella corallina (Follmann & Peine) Tehler...

polyketide first isolated in 1967 from the lichen Roccella portentosa and has since been extracted from various other lichen. It has exhibited moderate activity...

predominantly on bark, often in close association with other lichens such as species of Ramalina and Roccella. Its distribution frequently overlaps with that of...

January 1929. The fungus grows specifically on the thallus of Roccella gracilis, a fruticose lichen. The species epithet imitans (Latin for "imitating" or "mimicking")...

nationally scarce Roccella fuciformis, R. phycopsis, and golden hair-lichen (Teloschistes flavicans); and the BAP species ciliate strap-lichen (Heterodermia...

pale to dark red-brown in colour. The conidiophores are of the Roccella-type. Lichen products that occur in Aspiciliopsis are 5-O-methylhiascic acid...