Thank you, Bob.
From the patent numbers and the number of nurseries carrying the plants, at first glance, it looks like both have passed the "test of time." The lineage of both are "unknown" according to the patents.
I found an interesting link that shows the distribution of heurchera species in the US. There appear to be many species that are found in more arid climates. Just in case you might be interested, here is the link.
http://plants.usda.gov/core/pr...
Smiles,
Lyn
