Lasiodiplodia euphorbicola

Lasiodiplodia euphorbicola A.R. Machado & O.L. Pereira, in Machado, Pinho & Pereira, Fungal Diversity 67(1): 238 (2014)

MycoBanK: MB804872

Etymology: in reference to host family (Euphorbiaceae) of this pathogen.

Mycelium immersed or superficial, branched, septate, dark brown. Conidiomata pycnidial, stromatic, superficial, sepa- rate, globose, dark brown, unilocular, often covered by aerial mycelium, formed superficially on twigs of Pinus or corn straw in culture. Wall dark brown, thick-walled textura angularis, paler and thinner towards the conidiogenous region. Conidiophores absent. Conidiogenous cells holoblastic, deter- minate, discrete, cylindrical, hyaline, smooth and thin-walled, formed from cells lining the inner pycnidial walls, 5 − 15 × 3 − 4 μm. Paraphyses hyaline, cylindrical, septate, occasionally branched, ends rounded, up to 76 μm long, 2 − 4 μm wide. Conidia acrogenous, aseptate, ellipsoid to ovoid hyaline when young, later becoming medianly one-septate, dark brown, thick-walled, frequently with rounded apices, sometimes trun- cate base, 15−23×9−12 μm and longitudinal striations.

Habitat: On Jatropha curcas

Known distribution: Espírito Santo, São Paulo and Minas Gerais States, Brazil

Material utilized for morphological description: BRAZIL, Colatina, Espírito Santo, collar and root rot of J. curcas, 2011, A. R. Machado & O. L. Pereira, (VIC39109 holotype; culture ex-type CMM3609).