Fungalpedia – Note 3 Lucidascocarpa
Lucidascocarpa Ferrer, Raja & Shearer
Citation if using this entry: Noorabadi MT & Hyde KD (2023) New genera in 2008. Mycosphere (in press)
Index Fungorum Identifier 508169, Facesoffungi, MycoBank, GenBank, freshwater fungi.org, Fig 1
Ferrer & Shearer (2008) introduced Lucidascocarpa as a monotypic genus that was found as a saprobe on decorticated wood submerged in a river in Ecuador. This genus was placed in an uncertain position in Dothideomycetes, Ascomycota and is typified by Lucidascocarpa pulchella Ferrer, Raja & Shearer. Lucidascocarpa is characterized by rough-walled ascospores surrounded by a large gelatinous sheath. Asci are 8-spored, bitunicate, fissitunicate, clavate, pedicellate, with gelatinous material around the apex of the endoascus comprising eight overlapping, biseriate ascospores. Ascomata are white with the long necks, superficial or immersed, scattered or clustered, umbilical to subglobose, cylindrical, periphysate.
Fig 1. a–h Lucidascocarp pulchella (redrawn from Ferrer & Raja 2008) a Hyaline ascomata on surface of wood. b Neck with hyaline hyphae. c Peridium of an ascoma. d Ascoma showing release of ascospores through the neck. e Clavate ascus. f Fissitunicate ascus dehiscence. g Ascus fixed with lactic acid. h Partially empty ascus with arrows representing the gelatinous material enclosing the apex of the endoascus. Scale bars: a=1 mm, b, c, f, h=10 μm, e=20 μm.
The peridium is membranous, consisting of 5-7 elongated, thin-walled, hyaline cells. Pseudoparaphyses are absent and asci are fissitunicate. Lucidascocarpa was proposed to be placed in Dothideales. The asexual morph in this genus is unknown (Dong et al .2020,)
Type species: A. Ferrer, Raja & Shearer
Ferrer A, Raja HA, Shearer CA. 2008 – Lucidascocarpa pulchella, a new ascomycete genus and species from freshwater habitats in the American tropics. Mycologia 100(4), 642–646. https://doi.org/10.3852/07-152r2.
Dong W, Wang B, Hyde KD, McKenzie EH, Raja HA, Tanaka K, Abdel-Wahab M A, Abdel-Aziz FA, Doilom M, Phookamsak R, Hongsanan S. 2020 – Freshwater Dothideomycetes. Fungal Diversity 105, 319–575. https://doi.org/10.1007/s13225-020-00463-5
Maryam Tavakol Noorabadi, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.
(Edited by Kevin D. Hyde)
Published online 21 April 2023