Thrombium epigaeum (Pers.) Wallr.
Sphaeria epigaea Pers., Syn. meth. Fung. addendum: xxvii (1801).
Thallus forming a pale greyish-green or greenish-brown or greenish-yellow film on soil, smooth or subfurfuraceous, effuse. Perithecia wholly immersed in substrate except at ostiole. Involucrellum absent. Exciple brown, 250-400 µm diam. Paraphyses mainly unbranched, persistent. Ascospores 8 per ascus, simple, colourless, 18-30 × 5-12 µm.
S: Canterbury (Hanmer State Forest). On exposed clay soil below exotic conifers in plantation. First collected on IAL excursion to inland Canterbury, September 1981.
?Cosmopolitan
