Hypocreales » Flammocladiellaceae

Flammocladiella

Flammocladiella Crous, L. Lombard & R.K. Schumach., Sydowia 67: 103 (2015)

Hypocreomycetidae, Hypocreales, Flammocladiellaceae, Flammocladiella

Index Fungorum number: IF812530; Facesoffungi number: FoF 09183; 2 morphological species (Species Fungorum 2020); 1 species with sequence data.

 

Fungicolous on Massaria spp. on corticated branches of Acer spp. Sexual morph: Ascomata perithecial, pale luteous to yellow-orange, aggregated in clusters, on a single stromatic base, covered in a dirty white crustose layer, turning pale luteous to dirty white, KOH-, ostiolate. Ostiole papillate, periphysate. Peridium 3–4 layers of subhyaline, smooth-walled cells of textura angularis. Asci 8-spored, unitunicate, fusoidal-ellipsoidal to subclavate, hyaline, smooth-walled. Ascospores fasciculate, hyaline, fusoidal-ellipsoidal with obtuse ends, septate, warty, not to slightly constricted at septa. Asexual morph: Conidiomata sporodochial, determinate, hyaline, becoming orange. Conidiophores subcylindrical, septate, branched. Conidiogenous cells subcylindrical, terminal and intercalary, hyaline, smooth-walled, proliferating sympodially at apex. Conidia slimy, solitary, granular to guttulate, straight to gently curved, subcylindrical to narrowly obclavate, hyaline, smooth-walled (adapted from Crous et al. 2015).

 

Type species: Flammocladiella decora (Wallr.) Lechat & J. Fourn., Ascomycete.org 10(1): 48 (2018)

 

Notes: Flammocladiella was introduced by Crous et al. (2015) based on a single species F. aceris. Lechat & Fournier (2018) proposed Flammocladiella decora to accommodate Nectria decora. Flammocladiella decora produces long, subcylindrical conidia and a sexual morph, which are indistinguishable from F. aceris (Lechat & Fournier 2018). Considering morphological similarities and phylogenetic analyses, Lechat & Fournier (2018) regarded F. aceris as a synonym of F. decora. The genus is characterised by yellowish ascomata seated on ascomata of Massaria species, aggregate in clusters, covered by a crustose layer, having a papillate, periphysate ostiolar region, and a sporodochial asexual morph forming flame-like conidial masses, with subcylindrical conidia (Crous et al. 2015, Lechat & Fournier 2018).

 

 

 

Species illustrated in this entry:

Flammocladiella decora (Wallr.) Lechat & J. Fourn.

 

 

 

References:

Crous PW, Schumacher RK, Wingfield MJ, Lombard L et al. 2015 – Fungal Systematics and Evolution: FUSE 1. Sydowia 67, 81–118.

Lechat C, Fournier J. 2018 – Flammocladiella decora a new combination to accommodate the hypocrealean fungus Nectria decora. Ascomycete.org 10, 48–54.

 

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