Fungalpedia – Note 415, Palicella

 

Palicella Rodr. Flakus & Printzen

Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1          

Classification: Lecanoraceae, Lecanorales, Lecanoromycetidae, Lecanoromycetes, Pezizomycotina, Ascomycota, Fungi.

Based on morphological and phylogenetic analysis of ITS, LSU, SSU, RPB1 and RPB2, Palicella was introduced by Flakus and Printzen (2014) as a monotypic genus within Lecanoraceae to accommodate the type species Palicella glaucopa and included another two species in this genus; P. filamentosa and P. schizochromatica. Rodriguez-Flakus (2018) introduced P. lueckingii as another species in this genus and subsequently another two new species (P. anakeestiicola and P. xantholeuca were introduced by Fryday et al. (2019) and Kondratyuk et al. (2019) from genera Lecanora and Lecidea respectively. Currently, six species were accepted in this genus, which were collected from wood and lichens in Austria, Argentina, Canada, Chile, Finland, France, Germany, Malvinas, Norway, Poland, South America, Spain, Sweden, UK, USA and Antarctica (Flakus & Printzen 2014, Rodriguez-Flakus 2018, Fryday et al. 2019, Kondratyuk et al. 2019). This genus is mainly characterized by scrustose, rimose-areolate, partially continuous thallus, apothecia variable in color, wide axial body, tholus I+ blue, 8-spored asci, and narrowly to ellipsoid, colorless, simple, or rarely, 1-septate ascospores (Flakus & Printzen 2014). Morphologically, Palicella is similar to Ramboldia elabens in having apothecia with concolorous margins, as well as a biatorine exciple and narrowly ellipsoid ascospores, however, its different by the latter having typical Lecanora-type asci (tholus with a strongly amyloid lateral part, and broad, apically diverging non-amyloid axial body), pale orange pigments inside the exciple (K–), hypothecial granules (K+ purple) and a lack of atranorin (Hafellner 1993, Kalb et al. 2008, Elix 2009, Flakus & Printzen 2014). Palicella can be distinguished from other genera based on its morphology and phylogeny.

Type species: Palicella glaucopa (Hook. f. & Taylor) Rodr. Flakus & Printzen

Other accepted species: Species Fungorum – search Palicella

 

 

Figure 1 – Morphological features of Palicella glaucopa.  a Apothecia. b Section of apothecium. c Asci. d Ascospores. e Conidia. Scale bars: a = 500 μm, b = 50 μm, c–e = 10 µm. Redrawn from Flakus & Printzen (2014).

 

References 

Elix JA. 2009 – Ramboldia. Flora of Australia 57, 19–31.

Flakus PR, Printzen C. 2014 – Palicella, a new genus of lichenized fungi and its phylogenetic position within Lecanoraceae. The Lichenologist 46, 535–552.

Fryday AM, Orange A, Ahti T, Øvstedal DO, et al. 2019 – An annotated checklist of lichen-forming and lichenicolous fungi reported from the Falkland Islands (Islas Malvinas). Glalia 8, 1–100.

Hafellner J. 1993 – Die Gattung Pyrrhospora in Europa. Herzogia 9, 725–747.

Kalb K, Staiger B, Elix JA, Lange U, et al. 2008 – A new circumscription of the genus Ramboldia (Lecanoraceae, Ascomycota) based on morphological and molecular evidence. Nova Hedwigia 86, 23–42.

Kondratyuk SY, Lőkös L, Jang S H, Hur JS, et al. 2019 – Phylogeny and taxonomy of Polyozosia, Sedelnikovaea and Verseghya of the Lecanoraceae (Lecanorales, lichen-forming Ascomycota). Acta Botanica Hungarica 61, 137–184.

Rodriguez-Flakus P. 2018 – Palicella lueckingii (Lecanorales, Ascomycota), a new lichen species inhabiting Araucaria from the extratropical South America. Phytotaxa 344, 24–30.

 

Entry by

Liu XF, Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan 655011, China; Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand; School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.

 

(Edited by Saowaluck Tibpromma, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka)

 

Published online 26 November 2024

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