New species of Graphidaceae from the Neotropics and Southeast Asia

Abstract

Descriptions and illustrations are provided for 20 new species in the family Graphidaceae (lichenized fungi) originating from El Salvador, the Guianas, Venezuela, Colombia, and Malaysia: Acanthothecis adjuncta Welz & Sipman, differing from all other Acanthothecis species by the rounded ascocarps with covered discs; Astrochapsa albella Sipman, differing from A. meridensis in the white apothecium rim, the corticolous growth habit, the more or less clear hymenium, and the protocetraric acid chemistry; A. columnaris Sipman, differing from other Astrochapsa species by the columnar marginal slips; Chapsa francisci Sipman, differing from other Chapsa species by the numerous marginal lacinae; C. nubila Sipman, differing from other Chapsa species by the combination of a guttulate hymenium and 4-to 8-spored asci; Diorygma extensum Sipman, differing from D. minisporum in producing norstictic acid instead of stictic acid; Fissurina chapsoides Sipman, a Fissurina species with large, muriform ascospores and short ascocarps opening mostly by branched slits; F. gigas Sipman, differing from F. rufula in the larger ascomata and muriform ascospores; F. vorax Sipman, differing from other Fissurina species by the aggregated ascocarps in combination with papillose paraphysis tips; Graphis murali-elegans Sipman, differing from G. elegans and G. lumbricina in the muriform ascospores; G. nigroglobosa Sipman, differing from G. mexicana in the absence of a complete thalline margin; Melanotrema comosum Sipman, a species of Melanotrema with extruding, clavate, brown hyphae on columella and excipulum; Myriochapsa annulata Sipman, differing from M. psoromica by the conspicuous, free excipulum; M. chocoensis Sipman, differing from M. psoromica in the smaller ascospores; Ocellularia pitalensis Sipman, differing from O. maxima by producing hypoprotocetraric acid; O. rugosa Sipman, similar to O. zamorana but with wider ostioles and 1-septate, pigmented ascospores with thick-walled juvenile stage; Thelotrema berendsohnii Sipman, similar to T. alboolivaceum, from which it differs by submuriform ascospores; T. kinabaluense Sipman, differing from other Thelotrema species by small, brown ascospores and protocetraric acid; T. paludosum Sipman, differing from other Thelotrema species by an inspersed hymenium, hypoprotocetraric acid and colorless, transversely septate ascospores of c. 30 × 7 µm; and T. parvisporum Sipman, differing from T. adjectum in the small, grey-brown ascospores.

Lichens from the Colombian Amazon: 666 Taxa Including 28 new Species and 157 New Country Records Document an Extraordinary Diversity

“…The lirellae with the labia becoming soon fully exposed, the finely inspersed hymenium, and the comparatively narrow ascospores thus provide a unique character combination for A. exuens . Somewhat similar is the recently described Graphis murali-elegans Sipman from Colombian paramo, but that species has much broader, conspicuously thick-walled ascospores and produces norstictic acid (Sipman 2014).…”

An updated world key to the species ofAcanthotheciss. lat. (Ascomycota:Graphidaceae), with ten new species from Brazil

“…In her broad revision of genus concepts in Graphidaceae, Staiger (2002) added six more species to the genus, bringing the total to 22; however, since then the number of species assigned to Acanthothecis has more than doubled to 50, including several combinations and 25 further species described as new to science (Makhija & Adawadkar 2003, 2007Archer 2005Archer , 2007Archer & Elix 2007, 2008Dal-Forno & Eliasaro 2009;Kalb et al 2009;Kantvilas 2010;Sharma et al 2010;Tripp et al 2010;Cáceres & Lücking 2013;van den Boom & Sipman 2013;Lendemer & Harris 2014;Sipman 2014;Weerakoon et al 2014;Gupta & Sinha 2015;Muscavitch & Lendemer 2016;Joshi et al 2017;Seavey et al 2017;Herrera-Campos et al 2019). Eight previously recognized species were also placed in synonymy (Staiger 2002;Tripp et al 2010;Muscavitch & Lendemer 2016).…”

ONE HUNDRED AND SEVENTY FIVE NEW SPECIES OF GRAPHIDACEAE—a special issue of Phytotaxa

“…Ferraro et al 2014;Peláez et al 2014;Sipman 2014). With these contributions, we increase the number of known species in the core group of the family (excluding subfamily Gomphilloideae) by almost 10% in a single issue.…”