Mushroom part (4)

I think it could be either:

Which length description are you looking for?:

3 4*

'mushroom part' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for stem that I've seen before include "Slender upright part of wine glass" , "Supporting structure" , "part of a ship" , "supporter of flag, for example" , "Main stalk of a plant" .)

I've seen this clue in The Star Tribune, The Washington Post and the LA Times.

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