Fungalpedia – Note 471, Borinquenotrema 

 

Borinquenotrema Mercado-Díaz, Lücking & Parnmen

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

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

Classification: Graphidaceae, Ostropales, Ostropomycetidae, Lecanoromycetes, Pezizomycotina, Ascomycota, Fungi.

Borinquenotrema was proposed as a new genus with a single new species, B. soredicarpum by Mercado-Diaz et al. (2014) based on a combination of molecular sequence data and phenotype characters. Borinquenotrema soredicarpum was at first mistaken for a species of Carbacanthographis (Staiger & Kalb 2002), due to the thin, ecorticate thallus and the anatomy of the excipulum overarching the hymenium with a deep slit. However, based on the phylogeny of three loci (mtSSU, nuLSU, and RPB2), Lumbsch et al. (2014) defined it as an unsupported sister to the tribe Ocellularieae. The most remarkable feature of Borinquenotrema is carbonized ascomata with internal anatomy resembling Carbacanthographis, which develops from within soralia, as well as distoseptate, I+ blue-violet ascospores (Mercado-Diaz et al. 2014, Lumbsch et al. 2014). No other species have been introduced to this genus, which remains monotypic.

Type species: Borinquenotrema soredicarpum Mercado-Díaz, Lücking & Parnmen

Other accepted species: This genus is monotypic.

 

Figure 1 – Morphology of Borinquenotrema soredicarpum. a Thallus with ascomata. Scale bars: a = 1 cm. Redrawn from Mercado-Diaz et al. (2014).

 

References

Lumbsch HT, Kraichak E, Parnmen S, Rivas Plata E. et al. 2014 – New higher taxa in the lichen family Graphidaceae (lichenized Ascomycota: Ostropales) based on a three-gene skeleton phylogeny. Phytotaxa, 189(1), 39–51.

Mercado-Diaz, JA, Luecking R, Parnmen S. 2014 – Two new genera and twelve new species of Graphidaceae from Puerto Rico: a case for higher endemism of lichenized fungi in islands of the Caribbean? Phytotaxa 189 (1), 186–203.

Staiger, B. (2002) Die Flechtenfamilie Graphidaceae. Studien in Richtung einer natürlicheren Gliederung. Bibliotheca Lichenologica 85: 1–526.

 

Entry by

Lu L, 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 3 December 2024

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