> If it's not true then all is good 
> in the world of Aussie natives (mostly!!)

Dendrobium kingianum var silcockii is still generally recognised as a
variety although the taxonomy of D. kingianum below species level itself is
subject to debate and best left to the taxonomists. Others would call
silcockii merely a colour form of D. kingianum, just as bi-colour forms of
D. bigibbum aren't given varietal status.

I would speculate that this rumour may have arisen from the doubt expressed
by some judges that an orchid labelled as Dendrobium kingianum is actually a
'kingie'. Given that some grexes such as D. Rutherford Bluetongue have over
90% kingianum in the background, they appear very kingianum-like in shape
and colour but the small percentage of other species in the inheritance may
arouse suspicion due to some anomalous feature - often labellum shape and
size. D. kingianum's labellum typically has a rather small mid-lobe.

I'm certain this happens in other orchids as well.

Cheers...Steve


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