Rockefellera is a fungal genus in the family Pannariaceae. It is a monotypic genus, containing the single species Rockefellera crossophylla. The genus was circumscribed by James Lendemer and Erin Tripp in 2017. The generic name honors the Rockefeller family, “for their century-long support of North American conservation efforts, particularly with respect to national parks.”[2]

Species of lichen

Scientific classification
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Peltigerales
Family: Pannariaceae
Genus: Rockefellera
Lendemer & E.Tripp (2017)
R. crossophylla
Binomial name
Rockefellera crossophylla

(Tuck.) Lendemer & E.Tripp (2017)
  • Pannaria crossophyllaTuck. (1860)
  • Trachyderma crossophyllum(Tuck.) Trevis. (1869)
  • Pannularia crossophylla(Tuck.) Nyl. (1891)
  • Parmeliella crossophylla(Tuck.) G.Merr. & Burnham (1922)
  • Santessoniella crossophylla(Tuck.) P.M.Jørg. (2000)
  • Santessoniella crossophylla(Tuck.) P.M.Jørg. (2005)

Rockefellera crossophylla was originally described by American lichenologist Edward Tuckerman as Pannaria crossophylla, based on specimens he collected in New England.[3] He had previously mentioned the species in an 1859 publication by William Nylander,[4] but this was not a validly published name as a type was not indicated.[5]

Because of a dearth of records of the lichen from North America after its initial description, Per Magnus Jørgensen suggested in 2000 that it was potentially extinct in the wild on that continent.[6] Since then several populations have been reported from the Canadian Maritimes, the Ozark Highlands, and the southern Appalachian Mountains.[7][8]

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Rockefellera is distinguished from the closely related genus Protopannaria by having minutely digitate lobes, biatorine apothecia with hymenia that are hemiamyloid, asci that have internal apical ring structures, and smooth ascospores.

  1. “Synonymy: Rockefellera crossophylla (Tuck.) Lendemer & E. Tripp, in Lendemer, Stone & Tripp, J. Torrey bot. Soc. 144(4): 466 (2017)”. Species Fungorum. Retrieved 6 November 2021.
  2. Lendemer, James C.; Stone, Heather B.; Tripp, Erin A. (2017). “Taxonomic delimitation of the rare, eastern North American endemic lichen Santessoniella crossophylla (Pannariaceae)”. The Journal of the Torrey Botanical Society. 144 (4): 459–468. doi:10.3159/torrey-d-16-00009.1. JSTOR 26305705.
  3. Tuckerman, Edward (1860). “Observations on North American and other lichens. 1”. Proceedings of the American Academy of Arts and Sciences. 4: 383–407.
  4. Nylander, W. (1859). “Dispositio Psoromatum et Pannariarum”. Annales des Sciences Naturelles Botanique. 12: 293–295.
  5. “Record Details: Pannaria crossophylla Tuck., in Nylander, Annls Sci. Nat., Bot., sér. 4 12: 295 (1859)”. Index Fungorum. Retrieved 6 November 2021.
  6. Jørgensen, P. M. (2000). “Survey of the lichen family Pannariaceae on the American continent, north of Mexico”. Bryologist. 103 (4): 670–704. doi:10.1639/0007-2745(2000)103[0670:SOTLFP]2.0.CO;2. JSTOR 3244332.
  7. Lendemer, J.C.; Anderson., F. (2008). “Santessoniella crossophylla is rare, but not extinct, in eastern North America”. Evansia. 25: 74–75.
  8. Lendemer, James (2013). The Lichens and Allied Fungi of Great Smoky Mountains National Park: An Annotated Checklist with Comprehensive Keys. Bronx, N.Y: New York Botanical Garden Press. ISBN 978-0-89327-521-1. OCLC 824777481.

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