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6 December 2017 Pseudocyphellaria crocata (Ascomycota: Lobariaceae) in the Americas is revealed to be thirteen species, and none of them is P. crocata
Robert Lücking, Bibiana Moncada, Bruce McCune, Edit Farkas, Bernard Goffinet, Dinah Parker, José Luis Chaves, László Lőkös, Peter R. Nelson, Toby Spribille, Soili Stenroos, Timothy Wheeler, Alba Yanez-Ayabaca, Karen Dillman, Otto T. Gockman, Trevor Goward, Jason Hollinger, Erin A. Tripp, John Villella, Wilson R. Álvaro-Alba, Carlos Julio Arango, Marcela E. S. Cáceres, Luis Fernando Coca, Christian Printzen, Camilo Rodríguez, Klara Scharnagl, Ricardo Rozzi, Edier Soto-Medina, Lidia S. Yakovchenko
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Abstract

We provide a phylogenetic revision of the Pseudocyphellaria crocata complex in the Americas. Specimens traditionally identified as P. crocata, based on their cyanobacterial photobiont, yellow pseudocyphellae, at least partially white medulla, and yellow soralia or soralia-like structures, are shown to represent 13 distinct species, forming a monophyletic group divided into four large clades, three comprising one species each and one containing eight species, plus two taxa for which no molecular data are available. Seven species correspond to what was previously recognized as P. crocata and one to P. dozyana, whereas a further one is identified as the sorediate counterpart of the usually apotheciate taxon P. lechleri and another as a pseudosorediate morph of the usually phyllidiate species P. neglecta. Surprisingly, none of the species represents P. crocata s.str., which must therefore be excluded from the American lichen biota. The 13 recognized species include three species new to science and three new combinations: P. citrina (Gyeln.) Lücking, Moncada & S.Stenroos, comb. nov. [bas.: Cyanisticta citrina Gyeln., nom. nov. pro Sticta citrina Pers. nom. illeg.], P. desfontainii (Delise) Vain., P. deyi Lücking, sp. nov., P. dozyana (Mont. & Bosch) D.J.Galloway, P. epiflavoides (Gyeln.) Lücking, Farkas & Lőkös, comb. nov. [bas.: Cyanisticta epiflavoides Gyeln.], P. hawaiiensis H.Magn., P. hillii (C.W.Dodge) D.J.Galloway, P. holarctica McCune, Lücking & Moncada, sp. nov., P. lechleri (Müll. Arg.) Du Rietz, P. neglecta (Müll. Arg.) H.Magn., P. punctata Lendemer, Lücking & Moncada sp. nov., P. sandwicensis (Zahlbr.) Moncada & Lücking, comb. nov. [bas.: Sticta crocata f. sandwicensis Zahlbr.], and P. xanthosticta (Pers.) Moncada & Lücking. Based on sequenced specimens, a neotype is selected for P. citrina and epitypes for P. hawaiiensis, P. lechleri, P. sandwicensis and P. xanthosticta. A key to all sorediate or pseudosorediate species of this complex in the Americas is presented, and all species are described, discussed and illustrated.

Copyright ©2017 by The American Bryological and Lichenological Society, Inc.
Robert Lücking, Bibiana Moncada, Bruce McCune, Edit Farkas, Bernard Goffinet, Dinah Parker, José Luis Chaves, László Lőkös, Peter R. Nelson, Toby Spribille, Soili Stenroos, Timothy Wheeler, Alba Yanez-Ayabaca, Karen Dillman, Otto T. Gockman, Trevor Goward, Jason Hollinger, Erin A. Tripp, John Villella, Wilson R. Álvaro-Alba, Carlos Julio Arango, Marcela E. S. Cáceres, Luis Fernando Coca, Christian Printzen, Camilo Rodríguez, Klara Scharnagl, Ricardo Rozzi, Edier Soto-Medina, and Lidia S. Yakovchenko "Pseudocyphellaria crocata (Ascomycota: Lobariaceae) in the Americas is revealed to be thirteen species, and none of them is P. crocata," The Bryologist 120(4), 441-500, (6 December 2017). https://doi.org/10.1639/0007-2745-120.4.14
Received: 26 April 2017; Accepted: 1 October 2017; Published: 6 December 2017
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KEYWORDS
Bayesian Poisson tree processes (bPTP)
Pseudocyphellaria gilva
Pseudocyphellaria maculata
Pseudocyphellaria physciospora
species delimitation
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