Leptosphaeria variabilis Unamuno, 1941
Fungi, Ascomycota, Dothideomycetes, Pleosporales
Juncus spec., from Unamuno (1941a): part of an infected stem (a), perithecia with 1, 2, and several asci (b,c,d), and, more strongly magnified, three spores (e)
the mouth of the brown perithecia erupts through the epidermis of the stem; no mention of spots. Asci with 8 spores. Spore measurements are 7-8 x 30-36 µm.