American capital, and consequently, southern capital (6)
I believe the answer is:
athens
'capital' is the definition.
(capital of Greece)
'american capital and consequently southern' is the wordplay.
'capital' suggests taking the first letters.
'and' is a charade indicator (letters next to each other).
'consequently' becomes 'then' (I've seen this before).
'southern' becomes 's' (abbreviation).
The first letter of 'american' is 'a'.
'a'+'then'+'s'='ATHENS'
(Other definitions for athens that I've seen before include "Hasten to European capital" , "Hen sat down in the city" , "Capital of Greece" , "European capital city" , "Hasten (anag) -- capital city" .)