Billardiera longiflora is a species of flowering plant in the family Pittosporaceae and is endemic to Tasmania. It is a woody twiner or climber that has variably-shaped, often elliptic leaves, often varying with altitude, and greenish-yellow, pendent, tube-shaped flowers arranged singly and turning blue as they age. This species is often confused with the similar Billardiera macrantha of south-eastern Australia, including Tasmania.

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