taxonID	type	description	language	source
A8166274C04F552BBAF19EFE3FAB3884.taxon	description	Fig. 2	en	Tan, Ting-Hong, Gao, Fan, Bai, Song, Wu, Chun-Fang, Zhao, Ning-Ning, Qiu, Na, Zhou, Min, Ma, Jian (2025): Novel Helicotubeufia and Tubeufia (Tubeufiaceae, Tubeufiales) species from terrestrial habitats in Hainan Province, China. MycoKeys 126: 57-74, DOI: 10.3897/mycokeys.126.174148
A8166274C04F552BBAF19EFE3FAB3884.taxon	etymology	Etymology. “ qixianlingensis ” refers the place “ Qixianling Hot Spring National Forest Park ” from where the fungus was collected.	en	Tan, Ting-Hong, Gao, Fan, Bai, Song, Wu, Chun-Fang, Zhao, Ning-Ning, Qiu, Na, Zhou, Min, Ma, Jian (2025): Novel Helicotubeufia and Tubeufia (Tubeufiaceae, Tubeufiales) species from terrestrial habitats in Hainan Province, China. MycoKeys 126: 57-74, DOI: 10.3897/mycokeys.126.174148
A8166274C04F552BBAF19EFE3FAB3884.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, with masses of crowded, glistening conidia, white to pale brown. Mycelium partly immersed, partly superficial, composed of hyaline to pale brown, branched, septate, arising from creeping hyaphae, guttulate, smooth hyphae. Conidiophores 13 – 38 × 4.5 – 5.5 μm (x ̄ = 28 × 5 μm, n = 25), macronematous, mononematous, solitary or cespitose, erect, irregular cylindrical, short, flexuous, branched or unbranched, septate, pale brown, smooth-walled, thick-walled. Conidiogenous cells holoblastic, monoblastic or polyblastic, integrated, terminal, cylindrical, truncate at apex after conidial secession, pale brown, smooth-walled. Conidia solitary, acrogenous, helicoid, tapering towards the rounded ends, 77 – 101 μm diameter and conidial filament 6 – 7 μm wide (x ̄ = 90 × 6.5 μm, n = 20), 483 – 520 μm long (x ̄ = 499 μm, n = 20), loosely coiled 2 – 2 1 / 2 times, becoming loosely coiled in water, indistinctly multi-septate, subhyaline to pale brown, smooth-walled.	en	Tan, Ting-Hong, Gao, Fan, Bai, Song, Wu, Chun-Fang, Zhao, Ning-Ning, Qiu, Na, Zhou, Min, Ma, Jian (2025): Novel Helicotubeufia and Tubeufia (Tubeufiaceae, Tubeufiales) species from terrestrial habitats in Hainan Province, China. MycoKeys 126: 57-74, DOI: 10.3897/mycokeys.126.174148
A8166274C04F552BBAF19EFE3FAB3884.taxon	description	Culture characteristics. Conidia germinated on PDA and produced germ tubes within 9 h. Colonies on PDA reached 26 mm in diameter after 38 days of incubation at 25 ° C with an irregular shape, flat surface and undulate margin, pale brown to brown; the reverse was brown to black.	en	Tan, Ting-Hong, Gao, Fan, Bai, Song, Wu, Chun-Fang, Zhao, Ning-Ning, Qiu, Na, Zhou, Min, Ma, Jian (2025): Novel Helicotubeufia and Tubeufia (Tubeufiaceae, Tubeufiales) species from terrestrial habitats in Hainan Province, China. MycoKeys 126: 57-74, DOI: 10.3897/mycokeys.126.174148
32EF01A9D1425F9993F43399EBD9F747.taxon	description	Fig. 4	en	Tan, Ting-Hong, Gao, Fan, Bai, Song, Wu, Chun-Fang, Zhao, Ning-Ning, Qiu, Na, Zhou, Min, Ma, Jian (2025): Novel Helicotubeufia and Tubeufia (Tubeufiaceae, Tubeufiales) species from terrestrial habitats in Hainan Province, China. MycoKeys 126: 57-74, DOI: 10.3897/mycokeys.126.174148
32EF01A9D1425F9993F43399EBD9F747.taxon	etymology	Etymology. “ diaoluoshanensis ” refers the place “ Diaoluoshan National Nature Reserve ” from where the fungus was collected.	en	Tan, Ting-Hong, Gao, Fan, Bai, Song, Wu, Chun-Fang, Zhao, Ning-Ning, Qiu, Na, Zhou, Min, Ma, Jian (2025): Novel Helicotubeufia and Tubeufia (Tubeufiaceae, Tubeufiales) species from terrestrial habitats in Hainan Province, China. MycoKeys 126: 57-74, DOI: 10.3897/mycokeys.126.174148
32EF01A9D1425F9993F43399EBD9F747.taxon	description	Description. Saprobic on decaying wood in a terrestrial habitat. Sexual morph Undetermined. Asexual morph Hyphomycetous, helicosporous. Colonies on natural substrate superficial, effuse, solitary, gregarious, with mass of crowded, glistening conidia, white to pale brown. Mycelium partly immersed, partly superficial, composed of hyaline to pale brown, branched, septate, smooth hyphae. Conidiophores 24 – 57 × 4 – 6 μm (x ̄ = 36.5 × 4.5 μm, n = 20), macronematous, mononematous, erect, cylindrical, short, straight or slightly flexuous, occasionally branched, 0 – 3 - septate, hyaline to pale brown, thick-walled. Conidiogenous cells 12.5 – 14 × 3.7 – 4.5 μm (x ̄ = 13 × 4 μm, n = 25), holoblastic, monoblastic or polyblastic, integrated, terminal, cylindrical, truncate at apex after conidial secession, hyaline to pale brown, smooth-walled. Conidia solitary, acrogenous, helicoid, rounded at apex, 80 – 104 μm diameter and conidial filament 6.5 – 8 μm wide (x ̄ = 96.5 × 7 μm, n = 20), 431 – 485 μm long (x ̄ = 452 μm, n = 20), loosely coiled up to 1 1 / 2 times, becoming loosely coiled in water, septate, slightly constricted at septa, guttulate, hyaline to pale brown, smooth-walled.	en	Tan, Ting-Hong, Gao, Fan, Bai, Song, Wu, Chun-Fang, Zhao, Ning-Ning, Qiu, Na, Zhou, Min, Ma, Jian (2025): Novel Helicotubeufia and Tubeufia (Tubeufiaceae, Tubeufiales) species from terrestrial habitats in Hainan Province, China. MycoKeys 126: 57-74, DOI: 10.3897/mycokeys.126.174148
32EF01A9D1425F9993F43399EBD9F747.taxon	description	Culture characteristics. Conidia germinated on PDA and produced germ tubes within 12 h. Colonies on PDA reached 29 mm in diameter after 41 days of incubation at 25 ° C with an irregular shape, raised surface and undulate margin, pale brown to reddish-brown; the reverse was brown to reddish-brown.	en	Tan, Ting-Hong, Gao, Fan, Bai, Song, Wu, Chun-Fang, Zhao, Ning-Ning, Qiu, Na, Zhou, Min, Ma, Jian (2025): Novel Helicotubeufia and Tubeufia (Tubeufiaceae, Tubeufiales) species from terrestrial habitats in Hainan Province, China. MycoKeys 126: 57-74, DOI: 10.3897/mycokeys.126.174148
