taxonID	type	description	language	source
95DDAD3A530059F8A508C0298E766624.taxon	description	Fig. 2	en	Bai, Song, Wang, Fang, Wan, Su-Ran, Lv, Xiao-Kang, Chen, Li-Jun, Wu, Rong, Ma, Jian (2025): Two novel Helicosporium species (Tubeufiaceae, Tubeufiales) from southern China based on morphological and molecular evidence. MycoKeys 124: 159-176, DOI: 10.3897/mycokeys.124.168933
95DDAD3A530059F8A508C0298E766624.taxon	etymology	Etymology. ‘‘ qixianlingense ” refers to the place ‘‘ Qixianling Hot Spring National Forest Park, ” from where the holotype was collected.	en	Bai, Song, Wang, Fang, Wan, Su-Ran, Lv, Xiao-Kang, Chen, Li-Jun, Wu, Rong, Ma, Jian (2025): Two novel Helicosporium species (Tubeufiaceae, Tubeufiales) from southern China based on morphological and molecular evidence. MycoKeys 124: 159-176, DOI: 10.3897/mycokeys.124.168933
95DDAD3A530059F8A508C0298E766624.taxon	description	Description. Saprobic on decaying wood in a terrestrial habitat. Sexual morph Undetermined. Asexual morph Hyphomycetous, helicosporous. Colonies on natural substrate superficial, effuse, gregarious, yellowish green to brown. Mycelium partly immersed, partly superficial, composed of pale brown to brown, branched, septate, guttulate, smooth hyphae. Conidiophores 132 – 144 × 3.7 – 4.8 μm (x ̄ = 139 × 5.5 μm, n = 30), macronematous, mononematous, erect, cylindrical, long, straight or slightly flexuous, simple, septate, brown to dark brown at base, paler towards the apex, smooth, thick-walled. Conidiogenous cells 4.5 – 10 × 3 – 4.4 μm (x ̄ = 8 × 3.6 μm, n = 30), holoblastic, monoblastic, or polyblastic, integrated, intercalary, cylindrical, denticulate, arising laterally from the lower portion of conidiophores as tiny bladder-like protrusions (3 – 4 µm long, 2 – 2.7 µm wide), with each bearing 1 – 2 tiny sporogenous conidiogenous loci, hyaline to pale brown, smooth. Conidia solitary, pleurogenous, helicoid, tapering towards the rounded ends, developing on bladder-like protrusion, 11.7 – 12 μm in diameter, and conidial filament 1.2 – 2.1 μm wide (x ̄ = 11.9 × 1.7 μm, n = 30), 72.5 – 84 μm long (x ̄ = 76.5 μm, n = 35), up to 4 1 / 2 times, becoming loosely coiled when the conidia are young and not becoming loose when mature in water, indistinctly multi-septate, guttules, hyaline, smooth-walled.	en	Bai, Song, Wang, Fang, Wan, Su-Ran, Lv, Xiao-Kang, Chen, Li-Jun, Wu, Rong, Ma, Jian (2025): Two novel Helicosporium species (Tubeufiaceae, Tubeufiales) from southern China based on morphological and molecular evidence. MycoKeys 124: 159-176, DOI: 10.3897/mycokeys.124.168933
95DDAD3A530059F8A508C0298E766624.taxon	description	Culture characteristics. Conidia germinating on PDA within 11 hours, producing germ tubes from the conidial body. Colony on PDA reaching 3.2 cm in diameter after 44 days at room temperature (approximately 25 ° C), circular or irregular, umbonate, with an undulate margin, and pale brown to light pinkish in color.	en	Bai, Song, Wang, Fang, Wan, Su-Ran, Lv, Xiao-Kang, Chen, Li-Jun, Wu, Rong, Ma, Jian (2025): Two novel Helicosporium species (Tubeufiaceae, Tubeufiales) from southern China based on morphological and molecular evidence. MycoKeys 124: 159-176, DOI: 10.3897/mycokeys.124.168933
77504171AE715F29BC9D47EDBB4A5ED0.taxon	description	Fig. 3	en	Bai, Song, Wang, Fang, Wan, Su-Ran, Lv, Xiao-Kang, Chen, Li-Jun, Wu, Rong, Ma, Jian (2025): Two novel Helicosporium species (Tubeufiaceae, Tubeufiales) from southern China based on morphological and molecular evidence. MycoKeys 124: 159-176, DOI: 10.3897/mycokeys.124.168933
77504171AE715F29BC9D47EDBB4A5ED0.taxon	etymology	Etymology. ‘‘ tongrenense ” refers to the place ‘‘ Tongren City, ” from where the holotype was collected.	en	Bai, Song, Wang, Fang, Wan, Su-Ran, Lv, Xiao-Kang, Chen, Li-Jun, Wu, Rong, Ma, Jian (2025): Two novel Helicosporium species (Tubeufiaceae, Tubeufiales) from southern China based on morphological and molecular evidence. MycoKeys 124: 159-176, DOI: 10.3897/mycokeys.124.168933
77504171AE715F29BC9D47EDBB4A5ED0.taxon	description	Description. Saprobic on decaying wood in a terrestrial habitat. Asexual morph Undetermined. Sexual morph: Ascomata superficial, seated on a subiculum, solitary, scattered, globose to subglobose, bright reddish yellow to brown yellow, with central narrow ostiole, no observed setae. Peridium composed of several layers of brown to dark brown cells of textura angularis, outer layer brown cells, and inner layer pale brown to hyaline cells. Hamathecium comprising numerous, filiform, septate, branched, hyaline pseudoparaphyses. Asci 90.5 – 143 × 11.5 – 14.5 µm (x ̄ = 107.5 × 13 μm, n = 20), 8 - spored, bitunicate, fissitunicate, cylindrical to clavate, short-pedicellate, apically rounded, basally flexious. Ascospores 37 – 48 × 3.5 – 5.5 µm (x ̄ = 43 × 4 μm, n = 20), overlapping 2 – 3 seriate, elongate-fusiform, tapering towards narrow, widest at the central part, subacute ends, straight to slightly curved, guttules, multi-septate, hyaline, smooth-walled.	en	Bai, Song, Wang, Fang, Wan, Su-Ran, Lv, Xiao-Kang, Chen, Li-Jun, Wu, Rong, Ma, Jian (2025): Two novel Helicosporium species (Tubeufiaceae, Tubeufiales) from southern China based on morphological and molecular evidence. MycoKeys 124: 159-176, DOI: 10.3897/mycokeys.124.168933
77504171AE715F29BC9D47EDBB4A5ED0.taxon	description	Culture characteristics. Ascospores germinating on PDA, producing germ tubes within 19 hours. Colony on PDA reaching 0.7 cm diameter after 90 days at room temperature (approximately 25 ° C), circular or irregular, flat, with an entire margin, and pale brown to yellowish brown in color.	en	Bai, Song, Wang, Fang, Wan, Su-Ran, Lv, Xiao-Kang, Chen, Li-Jun, Wu, Rong, Ma, Jian (2025): Two novel Helicosporium species (Tubeufiaceae, Tubeufiales) from southern China based on morphological and molecular evidence. MycoKeys 124: 159-176, DOI: 10.3897/mycokeys.124.168933
