Mutant Daylily

This daylily has an extra petal and an extra sepal.  It doesn't always bloom this way. I'm anxious to see if it will occur again this year.

      Yesterday, I noticed that my daylily (Hemerocallis sp.) is about to bloom.  Last year, it surprised me because instead of having 6 tepals it had 8 (a tepal is just a petal or sepal.  Most non-botany people refer to both the petals and sepals on a daylily as "petals" but, the outer "petals" are actual sepals.  See photo below for clarification).  I think this is just a simple mutation, similar to the mutation that causes 4 leaf clovers but, I am not sure.  It will be interesting to see if this occurs again.  I'll update if it does.  I won't be able to post for the next few days but, hopefully I'll have some material to write about when I get back online again.  By the way, daylily flowers are also edible.

This image should clarify the difference between sepals and petals.  Sepals are on the outside, petals are on the inside.  Both terms are a more specific way to refer to tepals.  A teal is just a sepal or a petal.

Here is what the typical dayily looks like.