mystery seeds

[Ernie O'Byrne]

I recently harvested some seeds that were from a plant labled A. takadae or
peninsulae. Sadly I didn't pay too much attention to that plant when it was
blooming since it was in the back of my holding area and I didn't notice it
blooming. I wanted to check the seedhead in the new Gusman book and changed
the name to serratum, but then noticed that although the seedhead was very
loose, not densely packed, as described, each individual berry had only one
large seed (4-5mm), which did not fit the description of serratum (2-5 seeds
in each berry). The size of the seed is right at 5mm.

So, my question is: what are the possibilities? What temperate (not
tropical) arisaemas have a loosely packed seedhead with one large seed in
each berry? Anyone know? Or, does serratum sometimes make only one seed per
berry?

Ernie O'Byrne
Northwest Garden Nursery
86813 Central Road
Eugene, ORegon 97402
USA
USDA Z. 7B