So what is the difference between album & sulphurinum?
White/Yellow.
Dr Braem's explanation below:
a) alba resp. album means white, and in my opinion should only be used for plants with PURE WHITE flowers
b) sulphurinum ... is yellow ... and if you take it correctly, should only be used for sulphur-yellow flowers
c) flavum ... is also yellow
d) immamculatum ... is generally used for flowers without spots
etc. etc.
Regards, Mick
That's the theory, and should actually be followed when a description is published. However, this is not followed by everybody doing a description of a new variety (regardless of whether taxonomist or not! - many many examples of this). E.g., if I discover a Phrag. bessea with white flowers, and described before anybody else (correctly, according to "the code") as var. coloripunctata, because I had taken LSD the day I saw the flowers, then it is absolutely valid, and there is no way that calling it Phrag bessea var album would be "a valid name".
What I would be interested in is to know what the valid description of concolor var album and concolor var sulphurinum actually say.
Yes I agree but as both forms have been published, its seems its a matter of deciding if the bloom is yellow or white.
Olaf added the following:
For the white form
Paphiopedilum concolor (Bateman)Pfitzer forma album (Braem)Braem
For the yellow form
Paphiopedilum concolor (Bateman)Pfitzer forma suphurinum (Rchb.f.)Gruss
Regards, Mick
Not from a friend in Kunming, that's a plant from Thailand that went to Germany some years ago (long story). It is concolor album 'Yen' AM/RHT (Royal Horticultural Society of Thailand). I bought last year a division of that one too
Paphiopedilum concolor (var. hennisianum?) fma. sulphurinum "Yen AM/RHT"
I am of the same opinion as Roth.
It is 'Yen' AM/RHT.
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