Saint with new name? That's a bit of a bloomer (6)
I believe the answer is:
stamen
'a bit of a bloomer' is the definition.
(I've seen this before)
'saint with new name?' is the wordplay.
'saint' becomes 'st' (abbreviation).
'with' means one lot of letters go next to another.
'new' indicates anagramming the letters.
'name' anagrammed gives 'amen'.
'st'+'amen'='STAMEN'
'that's' acts as a link.
(Other definitions for stamen that I've seen before include "Flower's pollen carrier" , "Pollen-bearing organ of flowering plant" , "Flower pollen carrier" , "Manet's (anag.)" , "Male organ of plant" .)