Mycovellosiella is a genus of fungi belonging to the family Mycosphaerellaceae.
The species of this genus are found in Europe, northern America and Australia.

The genus was circumscribed by Eugenio dos Santos Rangel in Arch. Jard. Bot. Rio de Janeiro vol.2 on page 71 in 1917.

The genus name of Mycovellosiella is in honour of José Mariano de Conceição Vellozo (1742–1811), who was a Colonial Brazilian botanist who catalogued plant specimens.

Species
As accepted by Species Fungorum;
Mycovellosiella adinae
Mycovellosiella adinicola
Mycovellosiella aegles
Mycovellosiella ambrosiae
Mycovellosiella atylosae-scarabaeoides
Mycovellosiella bellynckii
Mycovellosiella brideliae
Mycovellosiella clausenae
Mycovellosiella costeroana
Mycovellosiella cucurbiticola
Mycovellosiella deightonii
Mycovellosiella fici-cuneae
Mycovellosiella gorakhpurensis
Mycovellosiella hyalofilispora
Mycovellosiella hymenodictyi
Mycovellosiella iresines
Mycovellosiella litseae
Mycovellosiella malvastri
Mycovellosiella minax
Mycovellosiella mucunae
Mycovellosiella myrtacearum
Mycovellosiella oryzae
Mycovellosiella paradoxa
Mycovellosiella phaseoli
Mycovellosiella pseudoidium
Mycovellosiella pyri
Mycovellosiella pyrina
Mycovellosiella robbsii
Mycovellosiella rosea
Mycovellosiella rubiacearum
Mycovellosiella sidae
Mycovellosiella terminaliae
Mycovellosiella verbascifolii
Mycovellosiella viticis
Former species; (most are in Mycosphaerellaceae family)





