The orchid Oncidium Hertha is a hybrid in the
Oncidium genus.
registered with the Royal Horticultural Society
by Gratrix in 1921.
Registered parents are
Oncidium Joan
×
Oncidium Lambeauianum.
The key influencing species of this hybrid are
Oncidium alexandrae (37.50%
)
Oncidium harryanum (25.00%
subgenus
Nevadensia
)
Oncidium nobile (25.00%
subgenus
Odontoglossum
)
listed in order of their genetic contribution.