Pseudocyphellaria crocata (Ascomycota: Lobariaceae) in the Americas is revealed to be thirteen species, and none of them is P. crocata

Lucking, R. and Moncada, B. and McCune, B. and Farkas, Edit and Goffinet, B. (2017) Pseudocyphellaria crocata (Ascomycota: Lobariaceae) in the Americas is revealed to be thirteen species, and none of them is P. crocata. BRYOLOGIST, 120 (4). pp. 441-500. ISSN 0007-2745

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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.) L " ucking, Moncada & S. Stenroos, comb. nov. [bas.: Cyanisticta citrina Gyeln., nom. nov. pro Sticta citrina Pers. nom. illeg.], P. desfontainii (Delise) Vain., P. deyi L " ucking, sp. nov., P. dozyana (Mont. & Bosch) D. J. Galloway, P. epiflavoides (Gyeln.) L " ucking, Farkas & L} ok " os, comb. nov. [bas.: Cyanisticta epiflavoides Gyeln.], P. hawaiiensis H. Magn., P. hillii (C. W. Dodge) D. J. Galloway, P. holarctica McCune, L " ucking & Moncada, sp. nov., P. lechleri (M " ull. Arg.) Du Rietz, P. neglecta (M " ull. Arg.) H. Magn., P. punctata Lendemer, L " ucking & Moncada sp. nov., P. sandwicensis (Zahlbr.) Moncada & L " ucking, comb. nov. [bas.: Sticta crocata f. sandwicensis Zahlbr.], and P. xanthosticta (Pers.) Moncada & L " ucking. 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.

Item Type: Article
Uncontrolled Keywords: SEQUENCES; PHOTOSYMBIODEMES; STICTA; NEW-ZEALAND; ALLIED FUNGI; beta-tubulin; NORTH-AMERICA; PAIR CONCEPT; LICHENIZED ASCOMYCOTA; CONTINENTAL UNITED-STATES; species delimitation.; Pseudocyphellaria physciospora; Pseudocyphellaria maculata; Pseudocyphellaria gilva; Bayesian Poisson tree processes (bPTP)
Subjects: Q Science / természettudomány > QK Botany / növénytan
Depositing User: MTMT SWORD
Date Deposited: 03 Jan 2018 09:43
Last Modified: 03 Jan 2018 09:43

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