Abdel-Wahab, Phytotaxa 340 (3): 289 (2018)








Khaleijomyces Abdel-Wahab, Phytotaxa 340 (3): 289 (2018)

Type and marine species:

Khaleijomyces marinus Abdel-Wahab, Phytotaxa 340 (3): 289 (2018)

Index Fungorum number: N/A                     Face of fungi number: FoF 03931

Saprobic on marine drift wood, sexual morph: Ascomata 110–175 μm high (excluding neck), 100–115 μm in diameter, globose to subglobose, hyaline to yellow orange to reddish-brown in colour, superficial to immersed, coriaceous, single, ostiolate with long neck, surrounded by dense brown, septate hyphae. Neck 120–175 μm long, 40–50 μm wide, hyaline to apricot in colour, periphysate. Peridium 20–37 μm thick, two-layered; outer layer 5–17 μm thick forming a textura epidermoidea, apricot to reddish-brown; inner layer 15–20 μm thick forming a textura angularis, hyaline, consists of thick-walled cells. Hamathecium consists of pseudoparenchyma that fills the young ascomatal venter and breaks down into catenophyses that deliquesce early. Asci 60–98 × 12–16 μm (x = 78 × 14 μm, n = 20), 8–spored, thin-walled, without apical apparatus, cymbiform to fusiform, persistent, developing from ascogenous tissue at the base of the ascomata. Ascospores 16–26 × 6–8 μm (x = 22 × 7 μm, n = 50), ellipsoidal to fusiform with rounded ends, hyaline, straight or slightly curved, smooth-walled, 2-3 seriate in asci, unicellular when young, becoming 1–4 septate, light brown to brown in older specimens and longer in size 21–26 × 7–8 μm (x = 24 × 7 μm, n = 15). Asexual morph: Undetermined.

Description from Abdel-Wahab et al. (2018).


Key references:

Abdel-Wahab MA, El-Samawaty AEMA, El-Gorbani AM, Yassin AM, Alsaadi MH (2018). Khaleijomyces marinus gen. et sp. nov. (Juncigenaceae, Torpedosporales) a new lignicolous marine fungus from Saudi Arabia. Phytotaxa 340 (3): 277–285.

Jones, E.B.G., Suetrong, S., Cheng, W.-H., Rungjindamai, N., Sakayaroj, J., Boonyuen, N., Somrothipol, S., Abdel-Wahab, M.A. & Pang, K.-L. (2014). An additional fungal lineage in the Hypocreomycetidae (Falcocladium species) and the taxonomic re-evaluation of Chaetosphaeria chaetosa and Swampomyces species, based on morphology, ecology and phylogeny. Cryptogamie Mycologie 35: 119–138.

Jones EBG, Suetrong S, Sakayaroj J, Bahkali AH, Abdel-Wahab MA, Boekhout T, Pang KL (2015) Classification of marine Ascomycota, Basidiomycota, Blastocladiomycota and Chytridiomycota. Fungal Diversity 73: 1–72.

Sakayaroj J, Pang KL, Jones EBG, Phongpaichit S, Vrijmoed LLP, Abdel-Wahab MA. (2005). A systematic reassessment of the marine ascomycetes: Torpedospora and Swampomyces. Botanica Marina 48: 395–406.

Type & Location:
Other Specimens:
Saprobic on driftwood in the intertidal zone.
Saudi Arabia.
Pertinent Literature:
Description from Abdel-Wahab et al. (2018).
NOTES: Phylogenetic analyses of a combined SSU and LSU rDNA dataset positions the genus Khaleijomyces within the family Juncigenaceae, Torpedosporales (Jones et al. 2015). Khaleijomyces forms a close relationship with the genera Fulvocentrum, Juncigena and Marinokulati (Sakayaroj et al. 2005, Jones et al. 2014, 2015). The three genera differ from Khaleijomyces by having, 3–septate, hyaline ascospores and asci with apical apparatus. Morphologically, Khaleijomyces shares common characters with Argentinomyces, Hapsidascus, Marinosphaera and Rhizophila. However, Khaleijomyces differs from the previously mentioned genera by having reddish-brown ascomata, catenophyses, outer layer of the peridium of cells of textura epidermoidea and unicellular, hyaline ascospores that are 1–4 septate, light-brown to brown ascospores when old. It also differs from them photogenically as they are distantly placed from the Torpedosporales.


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