Abstract
Pyrenodesmiarugosa Lee & Hur and Huriellaaeruginosa Lee & Hur are described as new lichen-forming fungi from a calcareous mountain of South Korea. Pyrenodesmiarugosa is distinguishable from Pyrenodesmiamicromontana (Frolov, Wilk & Vondrák) Hafellner & Türk, the most similar species, by thicker thallus, rugose areoles, larger apothecia, shorter hymenium, shorter hypothecium and narrower tip cells of paraphyses. Huriellaaeruginosa, the second new species, differs from ‘Squamulea’ chelonia Bungartz & Søchting by dark greenish-grey to grey thallus without pruina, gold to yellow-brown epihymenium, larger ascospores and thallus K– and KC– reaction. Molecular analyses employing internal transcribed spacer (ITS), mitochondrial small subunit (mtSSU) and nuclear large subunit ribosomal RNA (LSU) sequences strongly support the two caloplacoid species to be distinct in their genera. A surrogate key is provided to assist in the identification of all 20 taxa in Huriella and Squamulea.
Highlights
Many lichens are only detected in calcareous areas, for crustaceous lichens, as many plants are never found, except on calcareous rocks and soils (Watson 1918; Kossowska 2008; Pykälä et al 2017)
Calcicolous caloplacoid lichens were little reported from Korea in the past, for example, Rufoplaca aesanensis, it is assumed that diverse caloplacoid lichens inhabit calcareous rocks and soils which were previously reported from just rock or soil without specifying specific rock or soil types
We describe them as two new species, Pyrenodesmia rugosa and Huriella aeruginosa
Summary
Many lichens are only detected in calcareous areas, for crustaceous lichens, as many plants are never found, except on calcareous rocks and soils (Watson 1918; Kossowska 2008; Pykälä et al 2017). Caloplacoid lichens have been discovered in calcareous areas, such as Pyrenodesmia albopustulata Many lichens have been introduced from the calcareous areas in Korea, such as Anema decipiens Massal.) Forssell, Astroplaca loekoesiana S.Y. Kondr., Farkas, J.J. Woo & Hur, Caeruleum heppii (Nägeli ex Körb.) K. & Hur, Staurothele frustulenta Vain., Synalissa ramulosa (Hoffm.) Körb., Thyrea confusa Henssen, Toninia poeltiana S.Y. Kondr., Lőkös & Hur, T. tristis (Th. Fr.) Th. Fr. Calcicolous caloplacoid lichens were little reported from Korea in the past, for example, Rufoplaca aesanensis, it is assumed that diverse caloplacoid lichens inhabit calcareous rocks and soils which were previously reported from just rock or soil without specifying specific rock or soil types. This study describes two new calcicolous caloplacoid lichens in the genera Pyrenodesmia and Huriella. The specimens are deposited in the herbarium of the Baekdudaegan National Arboretum (KBA), South Korea
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