Jahnulales » Aliquandostipitaceae » Aliquandostipite

Aliquandostipite khaoyaiensis

Aliquandostipite khaoyaiensis Inderbitzin

Index Fungorum number: IF 483979

 

Sexual morph: Saprobic on submerged wood. Sexual morph: Ascomata 220–240 μm high, 190–210 μm diam., hyaline to pale brown, become dark brown with age, scattered, superficial, sometimes seated in a pseudostroma, globose or subglobose, sessile, membranous, with ostiolate papilla. Peridium 25–40 μm thick, membranous, composed of thin-walled, pale brown, compressed cells of textura angularis. Pseudoparaphyses 2 μm diam., numerous, cellular, sparsely branched, hyaline, septate. Asci 115–175 × 35–65 μm (x̄ = 145 × 45 μm, n = 20), 8-spored, bitunicate, fissitunicate, clavate, thickened at the apex, sessile or short pedicellate, with a well-developed ocular chamber. Ascospores 50–70 × 14.5–19.5 μm (x̄ = 63 × 17 μm, n = 20), variably arranged in asci, oval, hyaline  to pale brown, 1-septate, constricted at the septum, asymmetric, upper cell slightly shorter and wider than lower cell, guttulate, straight or curved, thin-walled, smooth, sheathed. Sheath first appressed to the ascospore wall, expanding and detaching from the polar regions when mounted in water, becoming balloon-like at the two poles, finally surrounding the entire ascospore. Asexual morph: Undetermined. (Descriptions from Dong et al. 2020)

 

Specimen examined: Costa Rica (Raja et al. 2005), USA (Raja et al. 2009), THAILAND, Songkhla Province, on submerged wood in a stream (Dong et al. 2020)

 

Fig. Aliquandostipite khaoyaiensis (J.L.Crane & A.N. Miller, F89-1). a–d, f A. (F89-1). a. Stalked ascoma. b. Ascospore with slug-like gelatinous sheath in nigrosin. c, d. Asci.  f. Ascospore with thick-walled gelatinous sheath. (Photo grabbed from Dong et.al 2020).

 

References:

Dong, W., Wang, B., Hyde, K.D., McKenzie et al. (2020) Freshwater Dothideomycetes. Fungal Diversity

Raja HA, Ferrer A, Shearer CA (2005) Aliquandostipite crystallinus, a new ascomycete species from wood submerged in freshwater habitats. Mycotaxon 91, 207–215

Raja HA, Ferrer A, Shearer CA (2009) Freshwater ascomycetes: a new genus, Ocala scalariformis gen. et sp. nov, and two new species, Ayria nubispora sp. nov. and Rivulicola cygnea sp. nov. Fungal Diversity 34, 79–86

 

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