Manly nature article omits height for unknown flower (7)
I believe the answer is:
yangtze
'flower' is the definition.
(Yangtze River is an example)
'manly nature article omits height for unknown' is the wordplay.
I cannot quite see how this works, but
'article' could be 'an' (indefinite article) and 'an' is located in the answer.
'unknown' could be 'z' (represents an unknown value in algebra) and 'z' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for yangtze that I've seen before include "Chinese river (Z, not S)" , "Asia's longest river" , "The . . . . . . . Kiang is china's principal river" , "River flowing from Tibet to the East China Sea" , "Chinese river; Tyne zag (anag.)" .)