Bugleweed in Australian prison starting to appear (5)
I believe the answer is:
ajuga
'bugleweed' is the definition.
The answer and definition can be both plants as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'australian prison starting to appear' is the wordplay.
'australian' becomes 'A' (common abbreviation).
'prison' becomes 'jug' (slang term).
'starting to' suggests taking the first letters.
The initial letter of 'appear' is 'a'.
'a'+'jug'+'a'='AJUGA'
'in' is the link.
Can you help me to learn more?
(Another definition for ajuga that I've seen is " Group with bugle".)