Dendrobium sanguinolentum is accepted species in  the family Orchidaceae  subfamily: Epidendroideae, tribe: Dendrobieae, subtribe: Dendrobiinae,  
Genus Dendrobium   section: Calcarifera 
Infraspecific taxa recognized within Dendrobium sanguinolentum: infraspecific taxa
This species is found in Thailand to W. Malesia and Philippines (Sulu Arch.).