"Bobby Baxter" expounded:

You are right Ann, there are over 42,000. As of 1:27 PM eastern time there
are 50,085 registered cultivars and if you include the pre-registered and
reserved cultivar names the total is 53,783.

Bobby Baxter
Married to the daylily Registrar

Ha! I'll file that away for next time! A local radio gardening show
on Saturday morning asked what plant had over 42,000 named varieties,
and I won a $50 gift certificate by calling in with the answer.

--
Ann, Gardening in zone 6a
Just south of Boston, MA
********************************