Hybrids are usually designated with an 'x' to clarify it's a hybrid, rather than a distinct species.
I've heard that this rule is waived in the case of naturally occurring, fertile, stable hybrids.
Is this correct?
Thus, D. spatulata x D. rotundifolia = D. tokaiensis, rather than D. x tokaiensis, because it is natural, fertile, and stable.
What about S. x wrigleyana? I know it's naturally occurring... is it fertile and stable? Can it be written as S. wrigleyana?
I've heard that this rule is waived in the case of naturally occurring, fertile, stable hybrids.
Is this correct?
Thus, D. spatulata x D. rotundifolia = D. tokaiensis, rather than D. x tokaiensis, because it is natural, fertile, and stable.
What about S. x wrigleyana? I know it's naturally occurring... is it fertile and stable? Can it be written as S. wrigleyana?
