Re: Re: Caesar's Ghost

Hi Chuck -- Ken Walkup has the story right as usual. I've never seen Caesar Ghost either, but it is supposed to be a white I. sibirica. Jean Witt would be the person to know where to find it. On the other hand if you just want a white sibirica to play with genetically, Snow Prince is another that is readily available and behaves in the same way. Jan and Marty have used it to produce a range of lovely "neo-sibiricas". The white x white giving blue offspring is the complementation effect of sanguinea white and sibirica white because of the  different loss-of-function mutations in the anthocyanin synthesis pathway in the two species. We do have a copy of the TSI issue with Kevin Vaughn's article discussing this if you need it.

Regarding bud count, this too is a sanguinea versus sibirica thing. Sanguinea typically has only two buds (no branch) whereas sibirica can have many more. Unfortunately, I have never seen as many as the 14 that Maureen Marks mentions on Banish Misfortune (a sibirica type)  but nine or ten can show up on pure sibiricas under our growing conditions -- four or five in the terminal with five or six more on two branches -- though six or seven are more typical. The hybrids that involve both sanguinea and sibirica almost always have 3-5 buds with one branch and 4-7 buds with two branches. Under our conditions, it is extremely rare for me to find three branches on a stalk (i.e. 3 branches plus the terminal buds as shown in the attached photo of a rebloom stalk on Lavender Fair) in either seedlings or named varieties. I don't recall seeing it much elsewhere either -- and it would surely be notable. However, it can happen. It would be very interesting to find out how often other people have got three branches on a stem in their Siberian.  Does it happen often and on which cultivars?    Bob Hollingworth




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