Sivanesania
Sivanesania W.H. Hsieh & Chi Y. Chen, Mycol. Res. 100(9): 1106 (1996).
Index Fungorum number: IF 26498; Facesoffungi number: FoF 11906, 1 morphological species (Species Fungorum 2022), molecular data available.
Pathogenic on stems and petioles of Rubi kawakamii. Sexual morph: Ascostromata immersed, erumpent, becoming superficial, scattered, multilocular, subcuticular to subepidermal, pulvinate, cells of ascostromata of brown-walled cell of textura globulosa to angularis. Locules numerous, globose to compressed, forming in a single layer. Ostioles inconspicuous. Peridium composed of dark brown cells. Pseudoparaphyses hyphae-like, septate, branched. Asci 8–spored, bitunicate, fissitunicate, clavate, short pedicellate, apically rounded and thickened, with an inconspicuous ocular chamber. Ascospores hyaline to brown when old, ovoid, with a hyaline, filiform, simple appendage. Asexual morph: Unknown (adapted from Liu et al. 2012).
Type species: Sivanesania rubi W.H. Hsieh & Chi Y. Chen
Notes: Sivanesania is characterised by superficial, scattered, multilocular ascostromata, inconspicuous ostioles, fissitunicate, clavate asci and hyaline to brown, ovoid ascospores, with a hyaline, filiform, simple appendage. Sivanesania morphologically resembles Botryosphaeria, Phyllosticta and Saccharata but can be differentiated based on its multilocular ascostromata and aseptate ascospores with a basal filiform, hyaline, simple appendage (Liu et al. 2012). Molecular data is lacking for the genus. Sivanesania is currently a distinct genus in Botryosphaeriaceae but more collections with DNA sequence data are needed to confirm its taxonomic placement.
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