Rauwenhoffia siamensis (Indonesia) ?

Rauwenhoffia siamensis Scheff., Ann. Jard. Bot. Buitenzorg 2: 23 1885. (Syn: Melodorum siamense (Scheff.) Bân (Unresolved)) ?;

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Images by Pudji Widodo (Id help by Mahadeswara Swamy) (Inserted by J.M.Garg)

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Is it Annonaceae 1 : Attachments (2).  4 posts by 3 authors.

Could you help me to id our plant please.

The plant has a resemblance to Rauwenhoffia siamensis / Melodorum siamensis

Did not find distribution in Indonesia.

 

 

References: The Plant List (Unresolved)