Fungalpedia – Note 148 Fusiformispora


Fusiformispora Phukhams. & K.D. Hyde

Citation when using this entry: Shah et al. (in prep) – Fungalpedia, new genera in 2020. Mycosphere

Classification: Amniculicolaceae, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota

Index Fungorum, Facesoffungi, MycoBank, GenBank Figs 1, 2.

The monotypic Fusiformispora was introduced by Phukhamsakda et al. (2020). It was isolated as a saprobe from a decaying branch of Clematis fulvicoma found in Chiang Rai Province, Thailand. Its sexual morph is characterized by immersed, scattered or sparsely distributed ascomata. It has a false covering that appears as black or brown, leather-like, globular spots. It contains centrally located ostioles that bear brownish papillae. The peridium contains several layers; the inner layers translucent, cellular of textura angularis. The hamanthecium are closely packed, branched, and filamentous with transverse septa. Fusiformispora possesses bitunicate or fissitunicate asci, having eight spores with thick walls. Asci may be cylindrical, club-like, and rounded apically, with a reduced ocular-type chamber with a bifurcate pedicel. Ascopores are hyaline, biseriately arranged or overlapping, filamentous and tapered at the narrow ends. Each cell may possess one or two small rounded vesicles with a smooth wall, constricted at the septa, and with a fine mucilaginous sheath. The asexual morph is undetermined. Fusiformispora may have similar characteristics to other genera in Amniculicolaceae in having globular, leather-like, brownish ascomata with papillate ostioles and pseudoparaphyses and filamentous, septate, mucilaginous ascospores (Liew et al. 2000Zhang et al. 2009). Fusiformispora with its terrestrial habitat shows contrasting characteristics from Amniculicola of Amniculicolacea in having barrel or club-shaped asci, and biseriately arranged ascosporesFusiformispora was identified as a new genus in Amniculicolacea based on the morphology and multiple gene analysis of LSU, SSU, ITS, tef1 and rpb2 sequence data.

Type species: Fusiformispora clematidis Mapook & K.D. Hyde 

Figure 1 – Morphology of  Fusiformispora clematidis (redrawn from Phukhamsakda et al. 2020). a Section through ascoma. b, c-e, f Ascospores. d Asci. Scale bars: a = 100 μm, b, c-e, f = 20 μm, d = 50 μm


Figure 2 – Fusiformispora clematidis (MFLU 17–1485, holotype). a, b Ascoma on host surface. b c Ascoma section. d Ostiolar canal. e Peridium. f Pseudoparaphyses. g–i Asci. j–m Ascospores. n Culture characteristics. Scale bars: b = 200 μm, c = 100 μm, d, j–m = 20 μm, e–i = 50 μm



Liew ECY, Aptroot A, Hyde KD. 2000 – Phylogenetic significance of the pseudoparaphyses in Loculoascomycete taxonomy. Molecular Phylogenetics and Evolution 16, 392–402.

Phukhamsakda C, McKenzie EH, Phillips AJ, Gareth Jones EB et al. 2020  Microfungi associated with Clematis (Ranunculaceae) with an integrated approach to delimiting species boundaries. Fungal diversity 102, 1203

Zhang Y, Fournier J, Crous PW, Pointing SB et al. 2009 – Phylogenetic and morphological assessment of two new species of Amniculicola and their allies (Pleosporales). Persoonia 23, 48–54.


Entry by

Sujit Shah, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.


Edited by Roberto Farias & Kevin D. Hyde