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Plant
from
eastern
New
Guinea
(7)
Plant from eastern New Guinea (7)
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The definition is at the beginning of the clue.
How the clue works
Right, so Plant is your definition there — that's the shrub genus Eugenia. For the wordplay, start with E for "eastern", then "New" is your anagram indicator telling you to shuffle "Guinea", which gives you UGENIA — stick E on the front and you've got the whole thing.