Given that there are
how many thousands of registered cultivars? - I'd be hesitant to try to identify most daylilies, especially if I did not know with absolute certainty what it was that was growing in my friend's garden.
That said, I think I would be comfortable in identifying 'White Stripe' in
anyone's garden.
I would also be comfortable with a few of the polymerous daylilies, including 'Hip to Be Square'.
Now, a related but also interesting (and perhaps practical) question is, of the couple hundred plus daylilies in my
own garden (even if in pots), which would I be able to identify without tags, if the plants were all moved but the tags all fell off?
Again, 'White Stripe', anything polymerous (lol), anything double (because I don't have that many doubles), anything UFO or spidery, 'Angelus Blue Skies', 'Mary's Gold', some of the diploid near-whites, 'Willow Dean Smith' (easily distinguishable from 'Beautiful Edgings'), 'Coming Up Roses', 'One Fine Day', anything patterned (because I don't grow many of those)...
On the other hand, some of the near-white tets I might have trouble distinguishing, ditto the pink tets...
