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Abgeschickt von Michael Weinert am 12 November, 2001 um 07:32:35
Antwort auf: Re: Colour variation of the hybrid C. 'Ulla Silkens' von Johnny Petersen am 11 November, 2001 um 18:23:19:
According to your description, 'Ulla' seems to behave in the same way as one of the parents, C.reginae, does. For reginae it is sure that the temperature during the development of the flower bud influences the depth of lip colouration. The warmer, the less colour. Please see the discussion about "C.reginae albolabium" under the section "Species and hybrids" in this forum.