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Three new Stirtonia from Everglades National Parkwith a key to neotropical species

Published online by Cambridge University Press:  29 January 2015

Frederick SEAVEY  and
Jean SEAVEY
Frederick SEAVEY
Affiliation:
South Florida Natural Resources Center, Everglades National Park, 40001 State Road 9336, Homestead, FL 33034, USA. Email: natureguides@mindspring.com
Jean SEAVEY
Affiliation:
South Florida Natural Resources Center, Everglades National Park, 40001 State Road 9336, Homestead, FL 33034, USA. Email: natureguides@mindspring.com
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Abstract

Stirtonia byssoidea, S. coei and S. latispora,all from coastal hammocks within Everglades National Park, are described as newto science. Stirtonia byssoidea is characterized by a felty byssoid thallus,conspicuous immersed white pruinose-like lirelliform ascigerous zones, smallascospores and the presence of perlatolic acid. It is closest to S.alba but has a different thallus type and much smaller ascospores.Stirtonia coei is recognized by its lirellate ascigerouszones raised well above a greyish crystallate thallus, large ascospores and alack of chemistry. It is closest to S. curvata but differs byits I+ blue thallus, strongly raised ascigerous zones and by havingno lichen substances. Stirtonia latispora can be identified byits white lirelliform ascigerous areas immersed in a greyish green thallus,large, broad ascospores with a conspicuously enlarged mid cell and lack ofsubstances. It would also key out close to S. curvata butdiffers by the aforementioned ascigerous zones, an I+ blue thallus,wider ascospores with a different locular configuration and its lack ofchemistry. A key to the six species known from the Neotropics is alsoprovided.

Keywords

FakahatcheeFloridaFlorida Baylichenstaxonomy

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Articles
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The Lichenologist , Volume 47 , Issue 1 , January 2015 , pp. 1 - 7
Copyright
Copyright © British Lichen Society 2015 

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