Giulia Tassi, Bulletin Labor. Orto Bot. de R. Univ. Siena 6: 92 (1904)
Agaricomycetes, Incertae sedis, Corticiales, Corticiaceae
Saprobic on dead stems of Lepidium graminifolium (Brassicaceae). Sexual morph: undetermined. Asexual morph: Conidiomata dark brown to black, pycnidial, solitary to gregarious, subepidermal in origin, deeply immersed, ellipsoid, with a globose to subglobose venter and a lateral, elongated, curved neck, unilocular, glabrous, thick-walled, ostiolate. Ostiole single, subcylindrical, laterally located. Conidiomatal wall composed of thick-walled, dark brown to hyaline cells of textura angularis to textura primatica. Conidiophores reduced to conidiogenous cells. Conidiogenous cells hyaline, phialidic, ampulliform to conical, smooth-walled. Conidia hyaline, cylindrical, rounded at apex, blunt and truncate at base, straight or slightly curved, aseptate, smooth-walled, bearing 3–7 flexuous, unbranched, tubular, apical appendages.
Notes: Tassi (1904) proposed a new genus Nematospora Tassi for a segregated species from Leptostroma Sacc. (as N. tenuis). Nematospora Tassi is a homonym of Nematospora Peglion (Peglion 1901). Thus, a new name Giulia Tassi (1904) was proposed but, Tassi did not explicitly transfer N. tenuis into this genus, an omission that was corrected by Saccardo and Saccardo (1906). Pirozynski and Shoemaker (1971) re-described the type species of Giulia and transferred the genus from Leptostromataceae to Phomaceae. Rungjindamai (2008) included a sequence of G. tenuis, which was isolated from the sheath of Bambusa arundinacea Retz. (Poaceae) from Thailand, in a molecular analysis and showed it clustered with the Corticiaceae (Corticiales, Basidiomycota). The genus is monotypic.
Distribution: Italy, Thailand (Rungjindamai 2008, this study).
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