Anacamptis papilionacea (NL: Grote vlinderorchis / EN: “big flowered” Butterfly Orchid / FR: Grand Orchis papillon / DE: Großblütiges Schmetterlings-Knabenkraut) must be considered polymorphic and as such, formal recognition of forms and varieties becomes a somewhat arbitrary process. Differences largely occur in flower size and pattern or colour but there are simply too many exceptions, intermediates and regional anomalies to give scientifically sound and infallible descriptions. "Expansa" - also called "Grandiflora", although variable is however one of the more easily distinguished varieties and a good place to study this plant is in Sicily where it is the sole papilionacea representative (though some variant forms are recognized).
Image: Vizzini (IT-SI) – 06/04/2012
© Johan Dierckx
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