Flower husband presented to poorly Cynthia (8)
I believe the answer is:
hyacinth
'flower' is the definition.
(thesaurus)
'husband presented to poorly cynthia' is the wordplay.
'husband' becomes 'h'.
'presented to' means one lot of letters go next to another.
'poorly' indicates anagramming the letters (I've seen this in other clues).
'cynthia' is an anagram of 'yacinth'.
'h'+'yacinth'='HYACINTH'
(Other definitions for hyacinth that I've seen before include "Girl" , "Spring flower" , "Flower of lily family" , "Fragrantly-flowered bulb" , "A bulb; any hitch? (anag.)" .)