Marinophialophora J.F. Li, Phookamsak & K.D. Hyde, 2018

Li, Junfu, Jeewon, Rajesh, Phookamsak, Rungtiwa, Bhat, Darbhe J., Mapook, Ausana, Chukeatirote, Ekachai, Hyde, Kevin D., Lumyong, Saisamorn & Mckenzie, Eric H. C., 2018, Marinophialophora garethjonesii gen. et sp. nov.: a new hyphomycete associated with Halocyphina from marine habitats in Thailand, Phytotaxa 345 (1), pp. 1-12 : 4

Marinophialophora J.F. Li, Phookamsak & K.D. Hyde , gen. nov.

Index Fungorum number: IF552733; Facesoffungi number: FoF 02832.

Etymology: — Named after its marine habitat and morphological similarity to Phialophora .

Hyphomycetous associated with Halocyphina species on decaying mangrove wood. Sexual morph: Undetermined. Asexual morph: Mycelium partly superficial, partly immersed on the substrate, composed of septate, branched, smooth, thin-walled, hyaline to subhyaline hyphae. Conidiophores macronematous, mononematous, straight or curved, aseptate, smooth, hyaline to subhyaline, unbranched, erect, single or caespitose, smooth, thin-walled, cylindrical, arising from hyphae. Conidiogenous cells phialidic, integrated, terminal or intercalary, determinate, hyaline to subhyaline, globose to ellipsoidal, smooth, without a conspicuous collarette. Conidia phialoconidia, hyaline or subhyaline, globose to subglobose, aseptate, borne in basipetally developing unbranched or branched chains, clavate, smooth, thin-walled.

Type species:— Marinophialophora garethjonesii J.F. Li, Phookamsak, Dayarathne & K.D. Hyde , sp. nov.

Notes:— Marinophialophora is described herein as a monotypic genus and typified by M. garethjonesii . The species was collected from decaying wood of mangrove in southern Thailand. This genus is characterized by its mononematous, macronematous conidiophores, aseptate subhyaline conidia and phialidic conidiogenesis without conspicuous collarette and colourless.

Marinophialophora morphologically resembles Phialophora Meldar , Phialomyces Misra & Talbot , Junctospora Minter & Hol. -Jech and Cladophiaphora Borelli. However, Marinophialophora differs from Phialophora in having phialides without a conspicuous collarette, which in Phialophora are very large and conspicuous. The genus differs from Junctospora in having intercalary phialides, as well as terminal phialides, and from Phialomyces due to its integrated conidiogenous cells, which in Phialomyces are discrete. Cladophialophora has holoblastic conidiogenesis.