Pleosporales » Testudinaceae

Lojkania

Lojkania Rehm, Növényt. Közlem. 4: 2 (1905).

 Index Fungorum number: IF 2919; Facesoffungi number: FoF 00580, 10 morphological species (Species Fungorum 2022), 1 species with molecular data.

Saprotrophic on decorticated wood. Sexual morph: Ascomata gregarious, immersed to semi-immersed in pseudoclypeus, or superficial, visible as raised, black dots on host tissue, covered by dense hyphae, uniloculate, ovoid to obpyriform, glabrous, dark brown to black, ostiole central, with carbonaceous papilla. Peridium thick-walled, of unequal thickness, slightly thicker at the apex, composed of several layers of small, brown to dark brown cells, arranged in textura angularis. Hamathecium composed of dense, trabeculate pseudoparaphyses, anastomosing between asci, embedded in gelatinous matrix. Asci 8-spored, bitunicate, cylindrical, short to long pedicellate, apically rounded, with a distinct ocular chamber. Ascospores overlapping uni-seriate, ellipsoidal, pale brown to dark brown, or reddish brown, 2-celled, constricted at the central septum, walls rough. Asexual morph: Unknown (Phookamsak & Hyde 2015).

Type species: Lojkania hungarica Rehm

Notes: Lojkania was synonymized under Herpotrichia by several authors (Barr 1984, Sivanesan 1972, 1984, von Arx & Müller 1975, Yuan & Barr 1994). Later, Lojkania was re-circumscribed by Barr (1984) and was distinguished as a separate genus from Herpotrichia. Barr (1984) placed Lojkania in Fenestellaceae and this was followed by Eriksson and Hawksworth (1991). Lojkania differs from Fenestella in the ascomatal features, peridium, pseudoparaphyses and ascospore types (Hyde et al. 2013). Lojkania resembles Verruculina in having ascomata immersed in pseudoclypeus, with short to long papilla, trabeculate pseudoparaphyses and didymosporous, brown ascospores (Hyde et al. 2013, Zhang et al. 2012). Lojkania differs from Verruculina in having different ecology as Lojkania was found on submerged wood while Verruculina is an obligate marine fungus. Hyde et al. (2013) re-examined the type of Lojkania and transferred it to Testudinaceae based on morphological features. Only LSU and SSU sequence data are available for Lojkania.

 

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