THE LICHEN GENUS PHYLLOPSORA (BACIDIACEAE) IN THE NEOTROPICS.
Item
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Title
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THE LICHEN GENUS PHYLLOPSORA (BACIDIACEAE) IN THE NEOTROPICS.
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Identifier
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AAI8801684
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identifier
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8801684
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Creator
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BRAKO, LOIS.
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Contributor
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William R. Buck
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Date
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1987
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Language
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English
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Publisher
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City University of New York.
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Subject
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Biology, General
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Abstract
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A taxonomic monograph is presented for the neotropical species of the lichen genus Phyllopsora Mull. Arg. The genus, as here circumscribed, is placed in the Bacidiaceae and distinguished from other genera by the combined characters of its squamulose to small foliose thallus with obvious prothallus, its ascal type with an amyloid hemispheric dome and narrow, conical masse axiale, its apothecial type composed of highly gelatinized hyphae with no clear distinction between the exciple and the hypothecium and with the same texture found in the center and margin of the apothecium as well as in the paraphyses, and by its small, thin-walled, rarely septate ascospores. The relationship of Phyllopsora with the genera Bacidia, Biatora, Eschatogonia, Physcidia and two newly described genera, is discussed. Type studies have been made for nearly all names included in Phyllopsora. Nineteen species and nine varieties are recognized in the neotropics. One species and one variety are newly described. Six species are reduced to varietal status necessitating new combinations, and 25 names are reduced to synonymy. Fifteen species are excluded from the genus and two new genera are described for four of these species.;The species concept in the genus is reassessed. Most species were found to exhibit great morphological variation. Clarification of their taxonomy has been achieved through comparative anatomy, investigation of lichen substances, and by ecological observations. New chemical data are given for a number of species and chemical strains are recognized for P. buettneri and P. corallina and their varieties. Based on this data the cladistic relationships of the neotropical species are discussed. Keys to the species and varieties are presented, and illustrations are included. Most species are corticolous. Seven of the nineteen species have a pantropical distribution and most of the remaining species are broadly distributed in the New World. A synopsis of the Old World taxa is presented.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
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Program
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Biology
