Asterinales » Asterinaceae

Batistinula

Batistinula Arx, Publicações Inst. Micol. Recife 287: 4 (1960).

Index Fungorum number: IF 523; Facesoffungi number: FoF 06732, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.

Epiphytes on surface of leaves. Superficial hyphae branched, septate, dark brown, radiating, with lateral, conical appressoria. Sexual morph: Thyriothecium superficial on host tissues, globose, dark brown to black, joined to branching mycelial out the outside, with a central ostiole. Hamathecium with sparse cylindrical, pale brown, branched, septate, pseudoparaphyses. Asci 8–spored, mostly broadly clavate, somewhat ovoid, with a short pedicle, apically thickened region not obvious. Ascospores brown, 3-septate, with smaller ends cells. Asexual morph: Unknown (adapted from Hongsanan et al. 2014).

Type species: Batistinula gallesiae Arx

Notes: Batistinula is characterised by globose, dark brown to black thyriothecia, broadly clavate or ovoid asci and brown, 3-septate ascospores. Batistinula resembles Halbania in having 3-septate ascospores but differs in having superficial mycelia that lack appressoria. Guatimosim et al. (2015) collected a specimen of B. gallesiae on living leaves of Caesalpinia echinata with epiphyllous colonies. Only LSU sequence data of B. gallesiae is available in GenBank. Batistinula is morphologically and phylogenetically a distinct genus in Asterinaceae. More collections are required to confirm the status of the genus.

 

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