Horst, F1 means first filial generation, i.e the first generation or direct offspring. So Bc. Morning glory is an F1 of C. purpurata. Now if you self the plant technically it will be Bc. morning glory, but it will not be F1 of C.purpurata, but an F2.Originally Posted by Horst
Your second question is very interesting and there was a long discussion about it at the WOC in Singapore. The answer to that question is YES, as a grex Bc. Morning Glory back crossed to any of its parents is still Bc. Morning glory. As long as the genetic material in the hybrid is from C. purpurata and B. nodosa it will be Bc. morning glory as a grex. So a plant i.e. 50% Purpurata and 50 % nodosa is a Morning glory, but a plant that is 75% Purpurata and 25 Nodosa or 25 % Purpurata and 75% purpurata is also Bc. Morning Glory. But from a horticultural point of view they can and will be given different names, since the characteristics of each will be different. To help visualize it I am attaching pictures from Orchidwiz.
This is Bc. Morning Glory (C. purpurata x B. nodosa)
This is Bc.Maria Hatney (Bc. Morning glory x C. purpurata)
And this is Bc. Wonder star ( Bc. morning glory x B. nodosa)
As a grex for classification all three are Bc. Morning Glory, but horticulturally they are three different plants.
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