Described at least 750 new fungal species

Described new plant pathogens

Described Phyllachora torrendiella as etiologic agent of lixa pequena (small verrucosis) in 1948

With J.N. da Silva described a new rose disease caused by a new species Stagonospora rosarum (1950)

Diplodia recifensis that causes mal de Recife (mango tree disease) in association with the insect Xyleborus affinis. 

With T. Gayão described Teichosporella oryzae that causes a rice disease (1950)

Didymella mangiferae and Ascochyta mangiferae that cause basal necrosis of leaves of mango trees (1952) 

Phomatospora anacardiicola 1957 and Diploidium anacardiacearum (with Cavalcante) that cause diseases in cashew nut tree 

With Bezerra et al. Pilgeriella anacardii 1964 that cause black mold of cashew nut

With J.L. Bezerra, G.E. P. Peres & H. da Silva Maia Entyloma vignae etiologic agent of leaf smut 

Described new human pathogens

With J.S. Silveira & S.T.C. Campos Endomycopsis epidermalis 1959 

With F. Monnier & J.S. Silveira Byrrha portiovaginalis 1961

With J.A. de Lima, F.P. Pessoa & S.K. Shome. Adiaspiromicose humana: doença pulmonar causada por Emmonsia brasiliensis. Publ. 331 IMUR (1961)