Acre - AC

Oncidium cebolleta, papilio (nowadays Psychopsis papilio) (*)


Alagoas - AL

Oncidium barbatum, baueri, cebolleta, cebolleta fma. albina, ciliatum, flexuosum.


Amapá - AP

Oncidium baueri


Amazonas - AM

Oncidium cebolleta, lanceanum, nanum (nowadays Lophiaris lanceana, nana), orthostates, urophyllum (*) (nowadays Tolumnia urophylla)


Bahia - BA

Oncidium barbatum, blanchetii, cebolleta, ciliatum, flexuosum, jonesianum, micropogon, ouricanense, phymatochilum (*), pumilum(nowadays Lophiaris pumila), silvanum.


Ceará - CE

Oncidium barbatum, cebolleta, ciliatum


Brasília - DF

Oncidium hydrophilum, macropetalum, pumilum (nowadays Lophiaris pumila)


Espírito Santo - ES

Oncidium amictum, barbatum, baueri, blanchetii, cebolleta, ciliatum, coloratum, cornigerum, crispum, croesus, curtum, divaricatum, edwallii, fimbriatum, flexuosum, forbesii, fuscans, gardneri, gilvum, gravesianum, harrisonianum, kautskyi, kraenzlinianum, lietzei, limminghei (nowadays Psychopsiella limminghei), loefgrenii, longicornu, longipes, majevskyi, marshallianum, micropogon, morenoi (nowadays Lophiaris morenoi), phymatochilum, pirarense, praetextum, pubes, pumilum (nowadays Lophiaris pumila), pulvinatum, robustissimum, sarcodes, schunkeanum, schwambachiae(nowadays Lophiaris schwambachiae), sphegiferum, trulliferum, unicolor, uniflorum, varicosum (?), verrucosissimum, warmingii, welteri, zappii.
X colnagoi(O. zappii x O gardneri var. calogrossum)
Rodricidium(Rodriguezia venusta X Oncidium pumilum)
According to Augusto Ruschi: geiseliii, novaesi, simonassii


Goiás - GO

Oncidium batemanianum, cebolleta, chapadense, fuscopetalum, hydrophilum, jonesianum, macropetalum, orthostates, pumilum (nowadays Lophiaris pumila), spilopterum(*), varicosum(**)


Maranhão - MA


Mato Grosso do Sul - MS

Oncidium amictum, cebolleta, cruciatum, edwallii, fuscopetalum, jonesianum, macropetalum, morenoi, nanum (nowadays Lophiaris morenoi, nana), paranaense, pumilum (nowadays Lophiaris pumila), spilopterum, waluewa.


Mato Grosso - MT

Oncidium cebolleta, chrysopterum(?), fuscopetalum, jonesianum, macropetalum, morenoi, nanum, pumilum (nowadays Lophiaris morenoi, nana, pumila,) spilopterum


Minas Gerais - MG

Oncidium amictum, barbaceniae, barbatum, batemanianum, baueri, blanchetii, caldense, cebolleta, ciliatum, cipoense, concolor, cornigerum, crispum, divaricatum, edmundoi, edwallii, euxanthinum (**), flexuosum, forbesii, fuscans, gardneri, ghillanyi, gracile, harrisonianum, hians, hookeri, hydrophillum, isopterum, jonesianum, loefgrenii, longicornu, limminghei (nowadays Psychopsiela limminghei),longipes, macropetalum, maculosum, marshallianum, martianum, ottonis, paranaense, phymatochilum, pirarense, pubes, pulvinatum, pumilum (nowadays Lophiaris pumila), ramosum, riograndense, robustissimum, sarcodes, sellowii, spilopterum, truncatum, uniflorum, warmingii, welteri, widgrenii.


Pará - PA

Oncidium baueri, cebolleta, flexuosum, fuscopetalum, heteranthum, lanceanum (nowadays Lophiaris lanceana), macropetalum, morenoi, nanum, pumilum (nowadays Lophiaris morenoi, nana, pumila,) trichodes


Paraíba - PB

Oncidium barbatum, cebolleta, gravesianum


Paraná - PR

Oncidium aberrans, albini, barbaceniae, bifolium, blanchetii, brunnipetalum, ciliatum, cogniauxianum, concolor, cornigerum, crispum, cruciatum, curtum, donianum, edwallii, fimbriatum, flexuosum, fuscans, gardneri, gravesianum, hians, hookeri, hydrophilum, leinigii, lietzei, loefgrenii, longicornu, longipes, martianum, ottonis, paranaense, pirarense, praetextum, pulvinatum, pumilum (nowadays Lophiaris pumila), riograndense, sarcodes, sphegiferum, trulliferum, uniflorum.
Ornithocidium roczonii Leinig (Ornithophora radicans X Oncidium riograndense)


Pernambuco - PE

Oncidium barbatum, blanchetii, cebolleta, cebolleta fma albina, flexuosum, gravesianum, lanceanum (nowadays Lophiaris lanceana), phymatochilum, raniferum, sellowii.


Piauí - PI

Oncidium cebolleta


Rio Grande do Norte - RN

Oncidium cebolleta


Rio Grande do Sul - RS

Oncidium bifolium, ciliatum, concolor, cornigerum, cruciatum, edwallii, fimbriatum, flexuosum, gravesianum, hookeri, hydrophilum, loefgrenii, longicornu, longipes, macronyx, micropogon, ottonis, paranaense, psyche, pumilum (nowadays Lophiaris pumila), pulvinatum, riograndense, sphegiferum, trulliferum, truncatum, uniflorum, widgrenii.


Rondônia - RO

O. scansor, orthostates.


Roraima - RR

Oncidium cebolleta, orthostates, Psychopsis sp. (possibly P. sandarae)


Rio de Janeiro - RJ

Oncidium amictum, barbaceniae, barbatum, batemanianum, baueri, blanchetii, ciliatum, cogniauxianum, concolor, cornigerum, crispum, croesus, cruciatum, curtum, dasytyle, divaricatum, donianum, edmundoi , edwallii, enderianum, fimbriatum, flexuosum, forbesii, fuscans, gardneri, gravesianum, harrisonianum, hians, hookeri, hydrophilum, imperatoris-maximiliani, kraenzlinianum, lietzei, loefgrenii, longicornu, longipes, majevskyi, mantini, marshallianum, ottonis, pectorale, pentescostele, phymatochilum, pirarense, praetextum, pubes, pulvinatum, pumilum (nowadays Lophiaris pumila), raniferum, sarcodes, sphegiferum, trulliferum, truncatum, unicolor, uniflorum, waluewa, warmingii, welteri, widgrenii, zappii.

Natural hybrids:
X litum Rchb. f.
X polletianum Rchb. f.
X praestans Rchb. f.
X punctatum
X scullyi Pabst & Mello


Santa Catarina - SC

Oncidium bifolium, blanchetii, chrysorhapis, ciliatum, cogniauxianum, concolor, cornigerum, crispum, cruciatum, donianum, edwallii, fimbriatum, flexuosum, fuscans, gravesianum, hookeri, hydrophilum, loefgrenii, longicornu, longipes, macronyx, micropogon, paranaense, ottonis, pectorale, pirarense, pumilum (nowadays Lophiaris pumila), pulvinatum, riograndense, sphegiferum, trulliferum, uniflorum


São Paulo - SP

Oncidium amictum, barbaceniae, baueri, blanchetii, ciliatum, cogniauxianum, concolor, cornigerum, crispum, cruciatum, edwallii, enderianum, euxanthinum, (**) fimbriatum, flexuosum, forbesii, gardneri, gravesianum, harrisonianum, hians, hookeri, hydrophilum, jonesianum, lietzei, loefgrenii, longicornu, longipes, macropetalum, morenoi (nowadays Lophiaris pumila), ottonis, paranaense, paranapiacabense, pectorale, phymatochilum, pirarense, pohlianum (nowadays Lophiaris pohliana), praetextum, pubes, pulvinatum, pumilum (nowadays Lophiaris pumila), uniflorum, raniferum, riograndense, sarcodes, trulliferum, varicosum (**) , warmingii, welteri.


Tocantins - TO

Oncidium orthostates, jonesianum






Notes:

(*)- possibly,

(**)-See "Considerations about the genera Oncidium in Brazil", by Carlos Eduardo de Britto Pereira)

- Any doubt about the occurrence above mentioned, please, see the topic "Brazilian Sections", where the source is indicated. See also the list of Brazilian species.

- This list is not exhaustive. It does not include all species assigned to the genus Oncidium.