Septocylindrium
Septocylindrium Bonord. ex Sacc., in Saccardo, Michelia 2: 15 (1880).
Index Fungorum number: IF 9878; Facesoffungi number: FoF 08656, 7 morphological species (Species Fungorum 2022), 1 species with molecular data.
Leaf spots mostly expanded, occasionally effuse, yellowish-ochraceous to brownish. Sexual morph: Unknown. Asexual morph: Caespituli amphigenous, greyish white, punctiform, often effuse, loose to dense, but often not very conspicuous. Mycelium immersed, hyphae colorless, narrow, forming small substromatal stromata. Conidiophores in small to moderately rich fascicles, arising from the hyphal aggregations, emerging through stomata, usually dense, straight, subcylindric to moderately geniculate-sinuous, simple, aseptate, occasionally with a single basal septum, smooth, hyaline. Conidial scars somewhat thickened and darkened. Conidia in chains, cylindrical, subfusiform, 1-3 septate, hyaline, smooth or almost so, ends rounded to subtruncate, hila somewhat thickened and darkened (adapted from description of Ramularia septata in Braun 1998).
Type species: Septocylindrium bonordenii Sacc.
Notes: Septocylindrium is characterised by yellowish-ochraceous to brownish leaf spots, immersed mycelium with colorless hyphae, subcylindric to moderately geniculate-sinuous conidiophores, with somewhat thickened and darkened conidial scars and cylindrical, subfusiform, 1–3-septate, hyaline conidia. Septocylindrium is currently considered as a synonym of Ramularia (Braun 1998; Videira et al. 2016). The placement of Septocylindrium in Mycosphaerellaceae is doubtful. More collections with DNA sequence data are needed to confirm the taxonomic placement of Septocylindrium. Molecular markers available for Septocylindrium are ITS and LSU.
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