obscure morning glory

This is undoubtedly Ipomoea obscura and Turbina corymbosa has fruit which always remain erect and look nothing like the fruit shown.

This species is non-native to Hawaii and is found on all the main islands. It is considered invasive according to the Weed Risk Assessment screening results: http://www.hear.org/pier/species/ipomoea...

Beautiful Elepaio!