Xylariales » Diatrypaceae

Allocryptovalsa

 

Allocryptovalsa Senwanna, Phookamsak & K.D. Hyde, in Senwanna, Phookamsak, Doilom, Hyde & Cheewangkoon, Mycosphere 8(10): 1839 (2017)

Xylariomycetidae, Xylariales, Diatrypaceae, Allocryptovalsa

Index Fungorum number: IF553857; 2 species with sequence data.

 

Saprobic on wood. Sexual morph: Ascostromata absent or present. When present; embedded in host tissue. Ascomata perithecial, solitary to aggregated, immersed to semi-immersed, globose to subglobose, dark brown to black, ostiolate. Ostiole periphysate. Peridium thick, comprising many layers of brown to black cells of textura angularis, outer cell merged with host cells. Paraphyses filamentous, originating from the base of perithecium, hyaline, unbranched, septate, slightly constricted at septa, narrowing toward the apices. Asci polysporous, unitunicate, thin-walled, clavate to cylindric-clavate, long-pedicellate, apex round to truncate, with a J-, subapical ring. Ascospores crowded, hyaline to pale yellow or pale brown when mature, oblong to allantoid, aseptate, smooth-walled, guttulate. Asexual morph: Undetermined (adapted from Senwanna et al. 2017).

 

Type species: Allocryptovalsa polyspora Senwanna, Phookamsak & K.D. Hyde, in Senwanna, Phookamsak, Doilom, Hyde & Cheewangkoon, Mycosphere 8(10): 1840 (2017)

 

 Notes: Allocryptovalsa was introduced by Senwanna et al. (2017) to accommodate A. polyspora and two combined species: A. cryptovalsoidea, which was transferred from Eutypella and Allocryptovalsa rabenhorstii, which was transferred from Cryptovalsa. The genus is characterised by stromata immersed in host tissues, polysporous asci and allantoid ascospores. However, the combined species A. cryptovalsoidea is invalid according to the basionym of this species. Eutypella cryptovalsoidea is invalid because Trouillas et al. (2011) designated holotype with three collections when they introduced E. cryptovalsoidea. Therefore, the current status of Allocryptovalsa cryptovalsoidea is further needed to be resolved.

 

 

Species illustrated in this entry:

Allocryptovalsa truncata M. Niranjan & V.V. Sarma, sp. nov.

 

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