Golubkovia

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Golubkovia
in the San Gabriel Mountains, Southern California
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Teloschistales
Family: Teloschistaceae
Genus: Golubkovia
S.Y.Kondr., Kärnefelt, Elix
, A.Thell & Hur (2014)
Species:
G. trachyphylla
Binomial name
Golubkovia trachyphylla
(
Tuck.
) S.Y.Kondr., Kärnefelt, Elix, A.Thell, J.Kim, M.H.Jeong, N.N.Yu, A.S.Kondr. & Hur (2014)
Synonyms[1]
  • Caloplaca elegans var. trachyphylla (Tuck.) Fink (1935)
  • Caloplaca trachyphylla (Tuck.)
    Zahlbr.
    (1931)
  • Placodium elegans var. trachyphyllum Tuck. (1882)
  • Xanthomendoza trachyphylla (Tuck.) Frödén (2013)

Golubkovia is a single-species fungal

placodioid in form (i.e., comprising lobes
that radiate out from a centre).

Taxonomy

The genus was circumscribed in 2014 by the lichenologists Sergey Kondratyuk, Ingvar Kärnefelt, John Elix, Arne Thell, and Jae-Seoun Hur. The generic name honours Russian lichenologist Nina Golubkova (1932–2009), who, according to the authors, "made important contributions to lichenology in northern Eurasia".[2] In North America, "sunny straps" is one vernacular name that has been proposed for the species.[3]

Golubkovia belongs to a clade contains the genus Xanthomendoza, with which it shares the characteristic of having a well-developed, thick layer of plectenchyma in the medulla. Unlike Xanthomendoza, Golubkovia does not have a lower cortical layer, it has an upper cortical layer that is scleroplectenchymatous, and it has a prosoplectenchymatous true exciple (the ring-shaped layer surrounding the hymenium). Additionally, the lichen is attached differently to its substrate.[2]

Habitat and distribution

Golubkovia trachyphylla is a widely distributed lichen found in Asia and North America, where it

placodioid in form (i.e., comprising lobes that radiate out from a centre).[2]

Chemistry

It contains

teloschistin as lichen products, and its cortex reacts K+ (purple) in chemical spot testing.[3]

References