Microthyriales » Microthyriaceae

Hamatispora

Hamatispora L.T.H. Yen, K. Yamag. & K. Ando, in Yen et al., Mycoscience 59(6): 468 (2018).

Index Fungorum number: IF 822829; Facesoffungi number: FoF 06752, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.

Saprobic on leaf. Sexual morph: Unknown. Asexual morph: Mycelium composed of branched, septate hyphae. Conidiophores unclear. Conidiogenous cells holoblastic, developing from hyphae. Conidia solitary, acrogenous, multi-septate, consisting of a main axis and lateral branches; main axis hook shaped with a long tail bearing lateral branches; lateral branches straight-shaped develop from different cells of the helicoids part of the main axis (adapted from Yen et al. 2018).

 

Type species: Hamatispora phuquocensis L.T.H. Yen, K. Yamag. & K. Ando

 

Notes: Hamatispora is characterised by big, tetraridiate and branched spores. Hamatispora resembles Tricladiella but differs in that Hamatispora has conidia which form one main axis and three arms which bud out from the first, the second and the third cell of the helicoid part of the main axis, while Tricladiella has one main axis and two short arms which grow from diverse levels of the main axis (Ando and Tubaki 1984). Hamatispora is unique in that the main axis is helicoid-shaped at the base which is lacking in Tricladiella. Phylogenetically, Hamatispora is a distinct genus in Microthyriaceae. Molecular markers available for Hamatispora are ITS and LSU.

 

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