Hercospora Fr., Syst. orb. veg. (Lundae) 1: 119 (1825)
MycoBank number: MB 2301; Index Fungorum number: IF 2301; Facesoffungi number: FoF 02250; 13 morphological species (Species Fungorum 2020), 1 species with sequence data.
Type species – Hercospora tiliae (Pers.) Tul. & C. Tul.
Notes – Hercospora was introduced by Fries in 1825 to accommodate Sphaeria tiliae and S. atrovirens. Tulasne & Tulasne (1863) accepted Hercospora tiliae (= S. atrovirens) as the type species of Hercospora. The characters of the genus were described in Petrak (1938) and Sutton (1980). Phylogenetic studies based on LSU sequence data, placed H. tiliae in Diaporthales, genera incertae sedis, where it grouped with Melanconis desmazierii (Castlebury et al. 2002, Rossman et al. 2007, Voglmayr et al. 2012, Voglmayr & Jaklitsch 2014). Norphanphoun et al. (2016) placed Hercospora in a new family Lamproconiaceae based on sequence data which clustered with Melanconis desmazieri, a species synonymized under Lamproconium desmazierii.
Figure 141 – Hercospora tiliae (redrawn from Sutton 1980 and Norphanphoun et al. 2016). a Ascomata. b, c Asci. d Ascospores. e Conidioma. f Conidiophores and developing conidia. g Conidia. Scale bars: a = 200 μm, b, c = 40 μm, d, f = 20 μm, e = 100 μm, g = 10 μm.