Published September 2, 2025 | Version v1
Taxonomic treatment Open

Ellisembia yuxiense Q. F. Zhang, K. Habib & Q. R. Li 2025, sp. nov.

  • 1. State Key Laboratory of Discovery and Utilization of Functional Components in Traditional Chinese Medicine & School of Pharmaceutical Sciences, Guizhou Medical University, Guian New District, Guizhou 550004, China
  • 2. State Key Laboratory of Discovery and Utilization of Functional Components in Traditional Chinese Medicine & School of Pharmaceutical Sciences, Guizhou Medical University, Guian New District, Guizhou 550004, China & The High Efficacy Application of Natural Medicinal Resources Engineering Centre of Guizhou Province (The Key Laboratory of Optimal Utilization of Natural Medicine Resources), School of Pharmaceutical Sciences, Guizhou Medical University, Gui'an, Guizhou, 561113, China
  • 3. Department of Botany, Khushal Khan Khattak University, Karak, KP, 27200 Pakistan
  • 4. School of Biology and Engineering (School of Health Medicine and Modern Industry), Guizhou Medical University, University Town, Guian New District, Guizhou 550025, China
  • 5. Engineering and Research Centre for Southwest Bio-Pharmaceutical, Resources of National Education Ministry of China, Guizhou University, Guiyang, Guizhou, 550025, China
  • 6. School of Life Sciences, Guizhou Normal University, Guiyang, 550025, China

Description

Ellisembia yuxiense Q. F. Zhang, K. Habib & Q. R. Li sp. nov.

Fig. 2

Etymology.

The specific epithet refers to the location where the holotype specimen was collected, Yuxi City.

Type.

China • Yunnan Province, Yuxi City, Ailaoshan National Nature Reserve (24°5'7.01"N, 101°31'30.44"E), altitude: 1169 m, on moist decayed branch, 15 September 2024, Qinfang Zhang, 2024 ALS 177 -1 (GMB 5104, holotype; GMBC 5104, ex-type); KUN-HKAS 146987, isotype.

Description.

Saprobic on decaying twigs of an unknown branch. Sexual morph: undetermined. Asexual morph: Mycelium superficial, septate, light brown to brown, numerous, scattered, single or in groups. Conidiophores 81–158 × 4–6 µm (av. = 110.3 × 5.1 µm, n = 30), macronematous, mononematous, solitary or caespitose, erect, verruculose, straight or slightly curved, becoming slightly narrower towards the apex, 7–12 - septate, smooth-walled, unbranched. Conidiogenous cells 3–6 × 2–4 µm (av. = 4.7 × 3.8 µm, n = 30), monoblastic, integrated, pale brown, terminal, cylindrical. Conidia 24–57 µm (av. = 40.4, n = 30) long, 6–9 µm (av. = 8.8 µm, n = 30) wide at the broadest part, tapering to 2–4 μm (av. = 3.4 μm, n = 30) wide at apex, 2–5 μm (av. = 3.4 μm, n = 30) wide at base, solitary, acrogenous, smooth, obclavate, truncate at the base, gray to light brown, without a mucilaginous cap, 5–9 - distoseptate, and also 3–5 euseptate.

Culture characteristics.

Conidia germinate on water agar within 12 hours. At 24 ° C, colonies growing on PDA reach a diameter of 10–15 mm after 7 weeks. Colonies convex, surface rough, moist, uneven, from above grayish-white, reverse dark brown to black. No pigmentation was produced in the culture medium.

Additional material examined.

China • Yunnan Province, Yuxi City, Ailaoshan National Nature Reserve (28°19'21.77"N, 104°00'19.21"E), altitude: 1419 m, on moist decayed branch, 15 September 2024, Qinfang Zhang, 2024 ALS 175 (GMB 5108; GMBC 5108).

Notes.

Phylogenetically, Ellisembia yuxiense formed a well-supported sister branch to E. calyptrata (HKUCC- 10821) (Fig. 1). However, the two species can be readily distinguished by conidiophore and conidia dimensions. Ellisembia yuxiense has significantly longer conidiophores (81–158 × 4–6 µm) compared to E. calyptrata (30–50 × 6–7 µm) and smaller conidia (24–57 × 6–9 µm vs. 60–90 × 9–12 µm) (Wu and Zhuang 2005; Shenoy et al. 2006). Morphologically, Ellisembia yuxiense resembles E. cryptomeriae in conidiophore size; however, the latter can be distinguished by its larger conidia, 20–85 × 7–14 µm with 6–17 septa, compared to E. yuxiense, which has conidia 24–57 × 6–9 µm with 5–9 septa. Differences from other morphologically similar species are provided in Table 2.

Furthermore, only the LSU and rpb 2 sequence data are accessible for E. calyptrata. A comparison of sequence data of the LSU and rpb 2 between E. yuxiense (GMB 5104) and E. calyptrata (HKUCC- 10821) shows 98.57 % sequence identity in LSU and 88.72 % sequence identity in rpb 2.

Notes

Published as part of Zhang, Qinfang, Ren, Yulin, Habib, Kamran, Lu, Changtao, Liu, Lili, Kang, Jichuan, Shen, Xiangchun, Lin, Chuangen, Wijayawardene, Nalin N., Al-Shwaiman, Hind A., Li, Qirui & Elgorban, Abdallah M., 2025, Two new species and a new host record of Hyphomycetes associated with decaying wood in Yunnan Province, China, pp. 311-328 in MycoKeys 121 on pages 311-328, DOI: 10.3897/mycokeys.121.162535

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Linked records

Additional details

Biodiversity

Collection code
GMBC
Material sample ID
GMB 5104, GMBC 5104, KUN-HKAS 146987 , GMB 5108, GMBC 5108
Event date
2024-09-15
Verbatim event date
2024-09-15
Scientific name authorship
Q. F. Zhang, K. Habib & Q. R. Li
Kingdom
Fungi
Phylum
Ascomycota
Order
Hyphomycetes
Family
Sporidesmiaceae
Genus
Ellisembia
Species
yuxiense
Taxon rank
species
Taxonomic status
sp. nov.
Type status
holotype
Taxonomic concept label
Ellisembia yuxiense Zhang, Habib & Li, 2025

References

  • Wu WP, Zhuang WY (2005) Sporidesmium, Endophragmiella and related genera from China. Fungal Diversity Research Series 15: 351.
  • Shenoy BD, Jeewon R, Wu WP, Bhat DJ, Hyde KD (2006) Ribosomal and RPB 2 DNA sequence analyses suggest that Sporidesmium and morphologically similar genera are polyphyletic. Mycological Research 110: 916–928. https://doi.org/10.1016/j.mycres.2006.06.004
  • Delgado G, Koukol O, Maciá-Vicente JG, Colbert W, Piepenbring M (2024) Redefining Ellisembia sensu stricto with a reassessment of related taxa in Sordariomycetes. Mycological Progress 23: 32. https://doi.org/10.1007/s11557-024-01967-z
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