Neohormodochis septispora D. P. Wei & K. D. Hyde 2022, sp. nov.
Creators: name: Wei, De-Ping
name: Gentekaki, Eleni
name: Wanasinghe, Dhanushka N.
name: Hyde, Kevin D.
name: To-Anun, Chaiwat
name: Cheewangkoon, Ratchadawan
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Ostropales
Stictidaceae
Neohormodochis
Neohormodochis septispora

description: Neohormodochis septispora D. P. Wei & K. D. Hyde, sp. nov. (Figure 2)
Index Fungorum number: IF 559772
Faces of Fungi number: FoF12298
Etymology: The epithet “ septispora ” refers to the septate conidia.
Holotype: China, Yunnan Province, Kunming, Panlong district, Kunming Institute of Botany, on an unidentified dead twig, 31 March 2021, Cuijinyi Li, KLCJY54 (HKAS 124171, holotype), (KUNCC 22-10806, ex-type culture).
Saprobic on an unidentified dead twigs. Sexual morph: Undetermined. Asexual morph: Conidiomata 165–360 × 140–340 (x̄ = 282 × 252, n = 10) μm, perithecial, immersed, conical to subglobose, white-pruinose, gregarious, with olivaceous green content. Conidiomatal wall 11–30 (x̄ = 19, n = 30) μm, consisting of hyaline, intricate hyphae, being encompassed by a layer of irregularly-shaped crystals. Conidiophores reduced to conidiogenous cells. Conidiogenous cell 3.5–10 × 0.8–2.4 (x̄ = 7 × 1.6, n = 25) μm, arising from stromatic cells, hyaline, cylindrical, thin-walled, the first conidium becoming conidiogenous by apical wall-building to form connected chain. Conidia 7.6–12 × 2–3.8 (x̄ = 9.5 × 3.3, n = 40) μm, hyaline, ellipsoidal, two-celled, occasionally asepate, slightly curved, arranged in branched chain.
Culture characteristics: isolates were obtained from germinating conidia. Colony slow-growing, reaching 2 cm after 8 weeks on PDA, white, circular, mycelia dense, velvety, reverse creamy-yellow.
Additional materials examined: China, Yunnan Province, Kunming, Panlong district, Heilongtan Park, 31 March 2021, Cuijinyi Li, HLCJY57 (HKAS 124172), (KUNCC22-10807, living culture); HLCJY58 (HKAS 124174), (KUNCC22-10808, living culture); HLCJY59 (HKAS 124173), (KUNCC22-10809, living culture); ibid. Songhuaba reservoir, 11 December 2021, De-Ping Wei, SHB1225 (HKAS 124170), (KUNCC22-10810, living culture).
Notes: Phylogenetically, Neohormodochis septispora has a sister affiliation to a clade comprising Hormodochis aggregata, H. melanochlora and H. eucalypti (Figure 1). Morphologically, N. septispora is similar with H. aggregata by catenulate conidia but differs by the hyaline, ellipsodial and septate conidia while it is olivaceous brown, subcylindrical to doliiform, and aseptate in the latter (Crous et al. 2020a). Hormodochis melanochlora is distinct by erumpent, globose, brown conidiomata that are immersed, conical to globose, white-pruinose from N. septispora (Crous et al. 2020a). Hormodochis eucalypti (syn. Phacidiella eucalypt) has dark brown to black conidiomata and subcylindrical to barrel-shaped conidia that are dramatically different from N. septispora (Crous et al. 2007, 2020b).
description: Published as part of Wei, De-Ping, Gentekaki, Eleni, Wanasinghe, Dhanushka N., Hyde, Kevin D., To-Anun, Chaiwat & Cheewangkoon, Ratchadawan, 2022, Neohormodochis septispora gen. et sp. nov. (Stictidaceae) from Yunnan Province, China, pp. 247-261 in Phytotaxa 573 (2) on pages 254-255, DOI: 10.11646/phytotaxa.573.2.5, http://zenodo.org/record/7349970