POLYMEROUS vs. POLYTEPAL

In 1995, the American Hemerocallis Society recognized a new classification of daylilies and called them "polytepals." This term was botanically incorrect. At the fall 2008 meeting of the AHS Board of Directors correctly changed the term to "polymerous."

As a leading advocate of this new form of Hemerocallis, I urge all daylily growers and hybridizers to use the term "polymerous" for flowers that are syntepalous, i.e., those that have four or more segments in each whorl that are joined at the base, forming the perianth tube as in daylilies.

The term "polytepalous" refers to multiple flower segments that are completely separate from each other, which is not the case in Hemerocallis.

Additional Polymerous Terms

tetramerous = 4 per whorl ; a tetramer
pentamerous = 5 per whorl; a pentamer
hexamerous = 6 per whorl; a hexamer

Bobby Baxter

Happy Moose Gardens

Cultivars Classified As Doubles

These are the cultivars that are registered with AHS as polymerous Doubles. I have included additional columns to indicate if the cultivar is also registered in multiple form classifications. Click the cultivar name to view master detail information.

Cultivar Name	Dbl	Spd	UF	Hybridizer	Reg. Year	Poly %
Bachelor's Dream	Yes	No	No	Holzrichter	2004	40%
Beware the Wizard	Yes	Yes	No	Couturier-G.	1995	75%
Chesapeake Bay Sunset	Yes	No	No	Bunting	2007	20%
Double Medusa	Yes	No	Yes	Gossard	2005	20%
Eight Days a Week	Yes	No	No	Sayers	2004	99%
Great Sand Dunes National Park	Yes	No	Yes	Stoneking-Jones	2002	60%
How Should I Bloom	Yes	No	No	Baxter	2006	40%
Janene's Ghost	Yes	No	Yes	Forrester	2006	50%
Larry Young's Wow	Yes	No	No	Sayers	2004	90%
Polymultipetalicious	Yes	No	No	Unger-J.	2007	99%

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