Re: Fern apogamy
> Are their other cases in which fertile fern hybrids are not apogamous?
Many. For example, in the North American Cystopteris there are five fertile
hybrids and three parents. A reticulogram of relationships may be found here:
http://flora.huh.harvard.edu/FloraData/001/Illus/02p/G40020898.gif
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