Scaevola sericea Vahl var. taccada (Gaertn.) Thieret & B. Lipscomb
Scaevola taccada (Gaertn.) Roxb.
Naupaka kahakai, beach cabbage, sea lettuce, beach naupaka
Naupaka kahakai is a Hawaiian native.
Identification: A shrub that is typically 3' (91 cm) in height, it sometimes reaches 10' (3 m) high and 15' (4.6 m) wide. Waxy, succulent leaves are up to 8" (20 cm) long and about a fifth as wide. The most recognizable feature of this shrub is its half-flowers, a source of legends like the one below.
Scaevola sericea var. taccada at the University of Hawai‘i’s College of Tropical Agriculture and Human Resources at Mānoa
Scaevola sericea var. taccada at the University of Hawaii at Manoa College of Tropical Agriculture and Human Resources Hawaiian Native Plant Propagation Database
Scaevola sericea var. taccada on the USDA Plants Database
Scaevola sericea var. taccada at Native Plants Hawai‘i
Scaevola sericea var. taccada description by Thomas H. Kent, last updated 25 May 2020.