María del Carmen Molina

Parmelia serrana is a species of foliose lichen in the family Parmeliaceae. It is native to Mediterranean regions, particularly in mountainous areas. It is a member of a complex of similar species centred around the common and widespread Parmelia saxatilis. It can be distinguished from these close relatives by the combination of long, sparsely branched lobes, numerous orbicular soralia, small pseudocyphellae, and sparse, mostly simple rhizines.

Parmelia barrenoae is a species of foliose lichen in the large family Parmeliaceae. It was formally described as a new species in 2005. Before this, it was lumped together as one of several lichens in the Parmelia sulcata group—a species complex of genetically distinct lookalikes. Parmelia barrenoae is widely distributed, occurring in Europe, western North America, Africa, and Asia. The greenish grey to whitish grey leafy thallus of Parmelia barrenoae grows up to 10 cm (4 in) in diameter. Features of the thallus surface include tiny pores for gas exchange, and vegetative propagules called

Xanthoparmelia vicentei is a species of saxicolous (rock-dwelling) foliose lichen in the family Parmeliaceae. Originally thought to be endemic to western Spain, it was discovered in Luxembourg in 2023, suggesting it may be more widespread in Europe than previously thought. The lichen forms yellowish-green thalli up to 7 cm wide with distinctive finger-like projections in the centre and rolled-back lobes with black tips. Chemical tests show it contains specific lichen products that help identify it from similar species.

Xanthoparmelia vicentei is a species of saxicolous (rock-dwelling) foliose lichen in the family Parmeliaceae. Originally thought to be endemic to western Spain, it was discovered in Luxembourg in 2023, suggesting it may be more widespread in Europe than previously thought. The lichen forms yellowish-green thalli up to 7 cm wide with distinctive finger-like projections in the centre and rolled-back lobes with black tips. Chemical tests show it contains specific lichen products that help identify it from similar species.

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Parmelia mayi is a species of foliose lichen in the family Parmeliaceae. It is found in the northern Appalachian Mountains of eastern North America, where it grows on rocks and on the trunks of paper birch and balsam fir. Parmelia mayi is morphologically indistinguishable from Parmelia saxatilis, but is distinct in its distribution, chemistry, and genetics.

Parmelia sulymae is a species of foliose lichen in the family Parmeliaceae. Found in humid forests of north-western North America. It was described in 2017 on the basis of morphology and DNA data that set it apart from lookalikes in the Parmelia saxatilis group, especially P. hygrophila. In practice, it is recognised by its narrow lobes, its tendency to produce compact granular propagules along the lobe margins, and its fine, often forking root‑like holdfasts on the lower surface. The species was named after Randy Sulyma, a British Columbia biologist, through a conservation auction where his

Parmelia imbricaria is a species of foliose lichen in the family Parmeliaceae. Found in western Canada, it was formally described as a new species in 2017 by Trevor Goward, Pradeep Kumar Divakar, María del Carmen Molina, and Ana Crespo. The type specimen was collected by Goward near the Clearwater River drainage (British Columbia, Canada), where it was found at an elevation of 700 m (2,300 ft) growing on a basalt boulder. The specific epithet refers to the "imbricate" (closely overlapping) lobes of the thallus. The lichen occurs in western Canada, with a range including southern Yukon and

Parmelia encryptata is a species of corticolous (bark-dwelling), foliose lichen in the family Parmeliaceae. Originally reported from the Iberian Peninsula and now confirmed from parts of Central and Eastern Europe, it is a semi-cryptic species that is a member of the Parmelia sulcata species complex, and it is morphologically indistinguishable from that lichen. Molecular phylogenetic analysis, however, shows that it forms a distinct monophyletic lineage separate from P. sulcata. Parmelia encryptata has been estimated to have diverged from the P. squarrosa complex about 5 million years ago.

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