Marcelo Pinto Marcelli

Bulbothrix cinerea is a species of lichenized fungi within the family Parmeliaceae. Among other Bulbothrix species, only B. isidiza has isidia combined with an underside that is light coloured. B. isidiza's laciniae are wider, while its thallus is pale, and contains salazinic acid. In turn, B. ventricosa is larger and a black underside and rhizinae. The African species B. decurtata is an obligately saxicolous lichen, and while similar, it has a dark underside and produces salazinic acid in its medulla. The species' name thus refers to its uncommon dark gray colouration of its thallus.

Parmotrema asperum is a species of saxicolous lichen in the family Parmeliaceae. Found in Brazil, it was described as new to science in 2008. The milky-grey thallus of the lichen is up to 11 centimetres (4.3 in) in diameter, consisting of irregularly branched lobes measuring 2.0–6.5 mm wide. The lichen is named for the coarse appearance of the thallus.

Parmotrema applanatum is a species of saxicolous (rock-dwelling) foliose lichen in the family Parmeliaceae. Originally described from collections made in Vale do Sol, Brazil, it was introduced as new to science in 2002. The lichen has a grey thallus up to 6 cm (2.4 in) wide, comprising lobes that are 0.2–0.6 mm wide. It grows on tree-shaded rocks in open woods. The species is difficult to collect because the thallus adheres strongly to its substrate. The specific epithet appalantum (Latin for "plane") refers to "the notoriously plane habit of the thalli".

Parmotrema anchietanum is a species of saxicolous lichen in the family Parmeliaceae. Found in South America, it was described as new to science in 2008. The holotype was collected on the rocky shore of Anchieta Island in São Paulo; the lichen is named after the type locality. Its leathery, pale grey thallus measures up to 16 cm (6.3 in) in diameter, composed of irregularly branched lobes that are typically 1–3 mm wide. Secondary compounds present in the lichen include atranorin and chloratranorin in the cortex, and salazinic acid and consalazinic acid in the medulla.

Parmotrema alectoronicum is a species of saxicolous lichen in the family Parmeliaceae that was introduced as new to science in 2002. It was originally described from collections made in Serra do Caraça, Brazil, where it was found growing at an elevation of 1,220 m (4,000 ft). The lichen has a yellowish-green thallus up to 9 cm (3.5 in) wide, comprising lobes that are 2.0–4.0 mm wide. The margins of the lobes have cilia that are up to 1.5 mm long. The specific epithet alectoronicum refers to the presence of alectoronic acid in the medulla. This presence of this compound, as well as usnic acid

Leptogium kalbii is a species of lichen in the family Collemataceae. It is found in Brazil, both in São Paulo State and in some Islands of Brazil.

Hypotrachyna brueggeri is a species of foliose lichen in the family Parmeliaceae. Described as a new species in 2002, it is known only from the type locality in southeastern Brazil, where it was collected at elevations of 1,000–1,400 m (3,300–4,600 ft). This lichen forms sprawling rosettes 10–15 cm across with broad, overlapping lobes and is distinguished by distinctive branched pustules that give its surface a rough texture. It grows on both tree bark and granite rocks in the moist montane forests of the Mantiqueira and Serra do Mar mountain systems, where persistent fog provides the humid

Hypotrachyna aspera is a species of foliose lichen in the family Parmeliaceae. The lichen forms loose, whitish rosettes with very narrow, finely divided lobes that give it a frilled appearance. It reproduces through small blisters on its surface that burst to release powdery granules containing both fungal and algal cells. Originally discovered in 2002 in the mountains of southeastern Brazil, it grows on acidic rocks in humid, partially shaded areas where moist forest meets open woodland. The species has since been found in several other Latin American countries, including Argentina, Bolivia,

Canoparmelia albomaculata is a species of lichen in the family Parmeliaceae. This species is very similar to the apostulate Canoparmelia caroliniana, showing the same colour, size and reticulate maculae. C. caroliniana, however, has true isidia. Big coralloid pustules that in some cases become sorediate are a characteristic feature for C. albomaculata.

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Punctelia roseola is a species of foliose lichen in the family Parmeliaceae. Found in Brazil, it was described as a new species in 2009 by lichenologists Patrícia Jungbluth, Marcello Marcelli, and John Alan Elix. The specific epithet refers to the pale rose colour of the medulla. The holotype was collected from Jurumirim municipality in São Paulo State, close to the Tietê River. There it was found growing on an isolated tree in a dry pasture, without direct sunlight. It has a grey thallus measuring 10–20 cm (4–8 in) wide; the lower thallus surface is pale, becoming darker (almost black) near

Punctelia purpurascens is a species of foliose lichen in the family Parmeliaceae. Found in Brazil, it was formally described as a new species in 2007 by lichenologists Marcelo Marcelli and Luciana da Silva Canêz. The type specimen was collected in the municipality of Vicara in the southern Brazilian state of Rio Grande do Sul. There it was found growing on a basaltic rock in an open field. The specific epithet purpurascens refers to the unusual K+ purple reaction of the medulla.

Punctelia imbricata is a species of foliose lichen in the family Parmeliaceae. Found in Brazil, it was described as a new species in 2009 by lichenologists Marcello Marcelli, Patrícia Jungbluth, and John Alan Elix. The holotype was collected in the Paulista municipality of São Paulo State. There it was found growing on the trunk of a mango tree, which was in a shaded and humid location in an orchard. The lichen has a greenish-grey thallus measuring 15–20 cm (6–8 in) wide, with a smooth upper surface that becomes a bit wrinkled in age; the lower surface is black. Punctelia imbricata contains

Punctelia fimbriata is a species of foliose lichen in the family Parmeliaceae. Found in Brazil, it was formally described as a new species in 2007 by Luciana Canêz and Marcelo Marcelli. The type specimen was collected in the municipality of Vicara in the southern Brazilian state of Rio Grande do Sul. There it was found growing on a tree trunk in an open field on an abandoned farm. It has a greenish-gray thallus measuring up to 10 cm (4 in) in diameter. The specific epithet fimbriata refers to the characteristic phyllidia of this species. Phyllidia are small, corticate, scale-like,

Punctelia digitata is a species of foliose lichen in the family Parmeliaceae. Found in Brazil, it was described as a new species in 2009 by lichenologists Patrícia Jungbluth, Marcello Marcelli, and John Alan Elix. The holotype was collected from Itirapina municipality in São Paulo State. It was found growing on a tree trunk in a cerrado forest, at an altitude of 770 m (2,530 ft). The thallus is greyish in colour, measuring 4.5–10 cm (2–4 in), comprising irregularly branched lobes with a width of 2–4 mm (0.08–0.16 in). The specific epithet digitata (Latin for "finger-like") refers to the

Punctelia crispa is a species of foliose lichen in the family Parmeliaceae. Found in Brazil, it was described as a new species in 2009 by lichenologists Marcello Marcelli, Patrícia Jungbluth, and John Alan Elix. The holotype specimen was collected in the Botujuru quarter of Campo Limpo Paulista municipality in São Paulo State. There it was found in a transition zone between a mesophyllous forest and a cerrado forest, growing on a tree trunk. It has a greyish thallus loosely attached to its substrate, measuring up to 10 cm (4 in) in diameter. Soredia on the thallus surface have a coarse

Parmotrema zicoi is a species of saxicolous lichen in the family Parmeliaceae. Found in Brazil, it was introduced as new to science in 2002.

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