Lily from the American nation (5)
I believe the answer is:
canna
'lily' is the definition.
The definition and answer can be both plants as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'from the american nation' is the wordplay.
'from' indicates the answer is hidden within the clue.
'CANNA' is hidden in the letters of 'the american nation'.
Can you help me to learn more?
(Other definitions for canna that I've seen before include "in Scotland is unable to" , "Kind of lily" , "Lily-like plant" , "Showy tropical plant" .)