Organise the list of a national flower (7)
I believe the answer is:
thistle
'a national flower' is the definition.
'thistle' can be an answer for 'flower' (I have seen 'Scottish flower ' mean 'thistle' so perhaps 'flower' could also mean 'thistle'). I'm unsure of the 'a national' bit.
'organise the list' is the wordplay.
'organise' indicates an anagram.
'the'+'list'='thelist'
'thelist' anagrammed gives 'THISTLE'.
'of' is the link.
Can you help me to learn more?
(Other definitions for thistle that I've seen before include "National emblem of Scotland" , "Scotland's emblem" , "Prickly plant, emblem of Scotland" , "Scots national emblem" , "...Partick" .)