Mycosphaerellales » Mycosphaerellaceae » Brunneosphaerella

Brunneosphaerella protearum

Brunneosphaerella protearum (Syd. & P. Syd.) Crous, in Crous et al., Stud. Mycol. 64: 31 (2009).

Leptosphaeria protearum Syd. & P. Syd., Annls mycol. 10(5): 441 (1912).

            Index Fungorum number: IF 514696; Facesoffungi number: FoF 11130, Fig. 1

Description:

Pathogenic on leaf surface. Sexual morph: Ascomata 145218.5 μm high, 170230 μm diam., immersed under epidermis or semi-immersed to erumpent, visible as tiny black dot in leaf spot lesion, dark brown to black, uniloculate, globose to subglobose, ostiolate, papillate, clustered, gregarious. Asci 75–112× 14–20 µm, (x̄ = 79.6 × 15.1 µm, n = 10), bitunicate, fissitunicate, 8-spored, clavate to cylindric-clavate, short pedicellate, apically rounded with an ocular chamber, hamathecium. Ascospores 21–30 × 5–9 µm, (x̄ = 25.6 × 6.5 µm, n = 10), 2-seriate, hyaline, guttulate, oblong to fusiform with obtuse ends, upper cell larger than the lower cell, uniseptate, constricted at the septum. Asexual morph: Unknown.

Material examined: South Africa, Wellington, Cape Province, on leaves of Protea melaleuca (Proteaceae), 22 February 1912, Doidge Ethel M (BPI 621547).