Parmotrema

Parmotrema is a genus of lichen belonging to the family Parmeliaceae.[1] It is a large genus, containing an estimated 300 species,[2] with a centre of diversity in subtropical regions of South America and the Pacific Islands.[3]

Parmotrema
Parmotrema hypotropum
Scientific classification
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Parmeliaceae
Genus: Parmotrema
A.Massal. (1860)
Type species
Parmotrema perforatum
(Wulfen) A.Massal. (1860)
Synonyms
  • Canomaculina Elix & Hale (1987)
  • Concamerella W.L.Culb. & C.F.Culb. (1981)
  • Parmelaria D.D.Awasthi (1987)
  • Rimelia Hale & A.Fletcher (1990)
  • Rimeliella Kurok. (1991)

Members of the genus are commonly called ruffle lichens or scatter-rag lichens.[4]:83

Description

Parmotrema is characterized by its typically large, moderately to loosely-attached foliose thallus with broad lobes that are usually more than 5 mm wide. There is a broad, naked zone around the margin of the lower surface, an epicortex with pores and an upper cortex with a palisade-plectenchymatous arrangement of hyphae. Ascospores are thick-walled and ellipsoid.[5]

Taxonomy

The genus was proposed as a genus by Italian lichenologist Abramo Bartolommeo Massalongo in 1860, with Parmotrema perforatum as the type species.[6] The genus name, composed of the Greek parmos (cup) and trema (perforation), refers to the perforate apothecia. Parmotrema was largely ignored as a genus,[7] and its species were usually grouped in section Amphigymnia of he large genus Parmelia.[8] Several genera previously segregated from Parmotrema have since been folded back in owing to molecular phylogenetic evidence, including Canomaculina, Concamerella, Parmelaria, and Rimelia.[3][9]

  • Parmotrema tinctorum
  • Parmotrema chinense
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See also

References
  1. Lumbsch TH, Huhndorf SM. (December 2007). "Outline of Ascomycota – 2007". Myconet. Chicago, USA: The Field Museum, Department of Botany. 13: 1–58. Archived from the original on March 18, 2009.
  2. Lücking, Robert; Hodkinson, Brendan P.; Leavitt, Steven D. (2017). "The 2016 classification of lichenized fungi in the Ascomycota and Basidiomycota–Approaching one thousand genera". The Bryologist. 119 (4): 361–416. doi:10.1639/0007-2745-119.4.361.
  3. Blanco, Oscar; Crespo, A.; Divakar, Pradeep K.; Elix, John A.; Lumbsch, H. Thorsten (2005). "Molecular phylogeny of parmotremoid lichens (Ascomycota, Parmeliaceae)". Mycologia. 97 (1): 150–159. doi:10.1080/15572536.2006.11832848. PMID 16389966.
  4. Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2
  5. Kurokawa, Syo; Lai, Ming-Jou (2001). "Parmelioid lichen genera and species in Taiwan". Mycotaxon. 77: 225–284.
  6. Massalongo AB. (1860). "Esame comparativo di alcune genere di licheni". Atti dell'Istituto Veneto Scienze. 3 (in Italian). 5: 247–276.
  7. Spielmann, Adriano Afonso; Marcelli, Marcelo Pinto. "Parmotrema s.l. (Parmeliaceae, lichenized Ascomycota) from Serra Geral slopes in central Rio Grande do Sul state, Brazil". Hoehnea. 36 (4): 551–595. doi:10.1590/S2236-89062009000400002.
  8. Hale, Mason E. (1974). "New combinations in the lichen genus Parmotrema Massalongo". Phytologia. 28 (4): 334–339.
  9. Crespo, A.; Kauff, F.; Divakar, P.K.; Prado, R. del; Pérez-Ortega, S.; Paz, G.A. de; Ferencova, Z.; Blanco, O.; Roca-Valiente, B.; Núñez-Zapata, J.; Cubas, P.; Argüello, A.; Elix, J.A.; Esslinger, T.L.; Hawksworth, D.L.; Millanes, A.M.; Molina, M.C.; Wedin, M.; Ahti, T.; Aptroot, A.; Barreno, E.; Bungartz, F.; Calvelo, S.; Candan, M.; Cole, M. J.; Ertz, D.; Goffinet, B.; Lindblom, L.; Lücking, R.; Lutzoni, F.; Mattsson, J.-E.; Messuti, M.I.; Miadlikowska, J.; Piercey-Normore, M.D.; Rico, V.J.; Sipman, H.; Schmitt, I.; Spribille, T.; Thell, A.; Thor, G.; Upreti, D.K.; Lumbsch, H.T. (2010). "Phylogenetic generic classification of parmelioid lichens (Parmeliaceae, Ascomycota) based on molecular, morphological and chemical evidence". Taxon. 59 (6): 1735–1753. doi:10.1002/tax.596008.
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