Mycosphaerellales » Mycosphaerellaceae » Graminopassalora

Graminopassalora graminis

Graminopassalora graminis (Fuckel) U. Braun, C. Nakash., Videira & Crous, in Videira et al., Stud. Mycol. 87: 308 (2017).

Scolicotrichum graminis Fuckel, Jb. nassau. Ver. Naturk. 23-24: 107 (1870) [1869-70].

Index Fungorum number: IF 822760; Facesoffungi number: FoF 09678, Fig. 1


Associated with leaf spot. Sexual morph: Unknown. Asexual morph: Mycelium internal, forming stromata of variable shape and size, typically well-developed, substomatal to immersed, brown. Conidiophores 65−80 × 4.1−8.8 µm (x̄ = 70.7 × 7.2 µm, n = 20), aggregated in fascicles, arising from stromata or through stomata, erect, subcylindrical, straight to curved, sinuous, somewhat geniculate, unbranched, septate, pale to dark brown, thin and smooth-walled. Conidiogenous cells 11−18 × 3−8 µm (x̄ = 17.8 × 5.6 µm, n = 20), integrated, terminal, with a single to numerous visible conidiogenous loci, thickened and darkened, typically hardly prominent. Conidia 25−35 × 9−15 µm (x̄ = 31.1 × 10.5 µm, n = 20), formed singly, ellipsoidal or cylindrical, ovoid to obovoid, short obclavate, 0–3-septate, occasionally slightly constricted at the septa, with slightly obtuse apex and base, olivaceous brown to pale brown, thin, smooth sometimes rough walled, hila rounded, thickened and darkened.

Material examined: The United States, Ohio, Logan, West Mansfield, on Alopecurus geniculatus (Poaceae), Kellerman, William Ashbrook, 10 May 1902 (Kell. OhioF.0097).