Neohelicosporium griseum (Berk. & M.A. Curtis) Y.Z. Lu & K.D. Hyde, Fungal Diversity 92: 241 (2018)

Chun-Sheng, Long, You-Peng, Wu, Xu, Zhang, Yan, Lin, Xiang-Chun, Shen, Jian, Ma & Qi-Rui, LI, 2023, Additions to hyphomycetes from Yungui Plateau, China with three new species (Ascomycota, Sordariomycetes), Biodiversity Data Journal 11, pp. 101629-101629 : 101629

Neohelicosporium griseum (Berk. & M.A. Curtis) Y.Z. Lu & K.D. Hyde, Fungal Diversity 92: 241 (2018)

Materials

Type status: Holotype. Occurrence: recordedBy: Chun-Sheng Long ; occurrenceID: 308A8DB4-3FA1-502F-B26E-7F5F12FE9F90; Taxon : scientificName: Neohelicosporium griseum; Location : continent: Asia ; country: China; stateProvince: Yunnan; county: Nanjian Yi Autonomous County; locality: Lingbaoshan National Forest Park ; verbatimElevation: 2418 m; verbatimCoordinates: 24.7342N, 100.4234E; Identification: identifiedBy: Chun-Sheng Long, Qi-Rui Li & Jian Ma; Event: eventTime: 18/8/2021; habitat: on decaying wood; Record Level: collectionID: GMB0412

Description

Conidiophores 3.5-4 µm diam. (x̅ = 3.6 μm, SD =1.2, n = 20), arising from a dark repent mycelium, more or less erect, dark brown, septate, irregularly branched, often forming a loop and network by anastomosing. Conidiogenous cells 1-1.5 µm long (x̅ = 1.3 μm, SD = 0.6, n = 20), 0.5-1 µm wide (x̅ = 0.8 μm, SD = 0.5, n = 20), holoblastic, monoblastic, integrated, intercalary or terminal, denticulate; denticles on the lower parts of conidiophores or directly arising on lateral of creeping fertile hyphae. Conidia diameter of coiled spores 12-15 µm (x̅ = 14.1 μm, SD =1.9, n = 20), pleurogenous, borne singly on minute hyaline sporogenous teeth, hyaline, tightly coiled 2½-3¼ times, indistinctly 18-20 septate.

Also see Lu et al. (2018).

Notes

Goos (1989) classified Helicosporium cinereum Peck, H. leptosporum Sacc. and H. lumbricoides Sacc. as H. griseum . Lu et al. (2018) placed H. griseum and H. lumbricoides in Neohelicosporium Y.Z. Lu, J.C. Kang & K.D. Hyde as N. griseum , based on phylogenetic analysis. Neohelicosporium ovoideum Y.Z. Lu et al. and N. griseum are similar in morphology, but the conidium of N. ovoideum has fewer curls (3-4 vs. 2-3) ( Lu et al. 2018).