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Bulbophyllum longissimum is accepted species in  the family Orchidaceae  subfamily: Epidendroideae, tribe: Dendrobieae, subtribe: Dendrobiinae,  
Genus Bulbophyllum   section: Cirrhopetaloides 
This species is found in Thailand.
Bulb. longissimum YL Chong
Bulb. longissimum YL Chong
Bulb. longissimum Faiz Lew
Bulb. longissimum Kurniadi Liu
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