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Oncidium Thelma (Oncidium Eximium × Oncidium Radiant)

Oncidium Thelma, McBean's 1925 (RHS)

The orchid Oncidium Thelma is a hybrid in the Oncidium genus. registered with the Royal Horticultural Society by McBean's in 1925. Registered parents are Oncidium Eximium × Oncidium Radiant. The key influencing species of this hybrid are Oncidium alexandrae (43.75% ) Oncidium nobile (28.13% subgenus Odontoglossum ) Oncidium harryanum (3.13% subgenus Nevadensia ) listed in order of their genetic contribution.
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Seed Parent
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Oncidium Eximium
Pollen Parent
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Oncidium Radiant
Seed Grandparents
Oncidium Ardentissimum
Oncidium Ardentissimum
Oncidium alexandrae
Oncidium alexandrae
Pollen Grandparents
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Oncidium Alexandra
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Oncidium Dora

Species Ancestors (3)
Oncidium alexandrae
Oncidium nobile


Onc. nobile 28.13%
Oncidium harryanum