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Phalaenopsis buyssoniana (Rchb.f 1888)
 
Du Buysson's Phalaenopsis.
Distribution : Thaïland, Vietnam
Synonym

Dor.pulcherrima var. buyssonniana (Seidenfaden & Smitinand 1965)
 

      Terrestrial plant. Many rigid roots laid out in regular crowns around the stem.
      Leaves oblong-elliptic to elliptic-oboval, concave. Pale limb grey green, more or less speckled of purple to the higher face, with mauve suffusions and spots at the lower face. Long 25 cm wide 9,5 cm. Flower stem erect, very flowered, being able to reach 1 meter long.
      Dorsal sepal elliptic to elliptic-obovate, obtuse. Lateral sepals sub-triangular to ovate, acute, slightly larger than the dorsal sepal. Petals sub-rhomboid to ovate, more length but narrower than the lateral sepals.
     3-lobed lip. Erect lateral lobes, lanceolat. Midlobe 3-lobulate, lateral lobule erect, elliptic, obtuse, rounded. Lobule median ovate, obtuse, shorter but broader than the lateral lobules.
      Simple Callus.
      Right, vigorous column.
Observations
 
      Flowers pink to purple. Darker Lip. Column pink with white anther.
      Naturally estival flowering. The displacement of flowering about the winter period appears possible with the intensive lighting of the plants (bulbs with sodium vapour).
      Phalaenopsis buyssoniana is tetraploid (76 chromosomes instead of 38), for this reason it was regarded a long time as a form "improved" of Phalaenopsis pulcherrima. Protocormes of this last, treaties with colchicine for inducing changes, provided plants tetraploid, different of Phalaenopsis buyssoniana, which seems to prove that one has to make indeed with two different species.
 
History
 
     Named in the honor of the French orchidophile the Count François du Buysson.
     Some additional words from Rolf in the Orchid Review N°152 august 1905.