The orchid Paphiopedilum Castleanum is a Paphiopedilum hybrid.
registered with the Royal Horticultural Society
by Sanders[St Albans] in 1891.
Registered parents are
Paphiopedilumhirsutissimum
×
Paphiopedilumsuperbiens.
The key influencing species of this hybrid are
Paphiopedilum hirsutissimum (50.00%
subgenus Paphiopedilum
section: Paphiopedilum
)
Paphiopedilum superbiens (50.00%
subgenus Sigmatopetalum
subsection: Loripetalum
)
listed in order of their genetic contribution.