The orchid Oncidium Rosina is a Oncidium hybrid.
registered with the Royal Horticultural Society
by Charlesworth Ltd. in 1918.
Registered parents are
Oncidium Eximium
×
Oncidium Lady Pirrie.
The key influencing species of this hybrid are
Oncidium alexandrae (37.50%
)
Oncidium nobile (12.50%
subgenus
Odontoglossum
)
listed in order of their genetic contribution.