The orchid Oncidium Mercia is a hybrid in the
Oncidium genus.
registered with the Royal Horticultural Society
by Charlesworth Ltd. in 1921.
Registered parents are
Oncidium Felicia
×
Oncidium Dora.
The key influencing species of this hybrid are
Oncidium nobile (43.75%
subgenus
Odontoglossum
)
Oncidium alexandrae (18.75%
)
Oncidium cirrhosum (12.50%
subgenus
Erectolobata
)
listed in order of their genetic contribution.