Scaevola gaudichaudii

It grows to a height of 6 feet (1.8 m), spreading to a diameter of 8 feet (2.4 m) and has a life span of about five years. Scaevola gaudichaudii likes full sun and harsh, dry, and windy locations. The plant is well known for producing very distinct half-flowers. It flowers year round with weakly fragrant blossoms that vary in colour from dark yellow, brownish-yellow to pinkish. The drupes are small and purple, and the seeds are about 5.6 mm in length. The leaves are from 1 inch (2.5 cm) to 2 inches (5.1 cm) long and are slightly toothed.

Scaevola gaudichaudii is endemic to the Hawaiian Islands and can be found on Kauaʻi, Oʻahu, Molokaʻi, Lanaʻi, Maui, and Hawaiʻi Island. It flourishes in dry to mesic forests, which sets it apart from other mountain naupaka that tend to inhabit damper areas at higher altitudes.

Scaevola gaudichaudii, and the handful of other ridgetop or mountain naupaka, are included in Hawaiian moʻolelo. The plantsʻs story has many variations, but the main points entail a young man and woman falling in love only to become separated. The flowers are representations of the lovers, with the joining of the two halves from seaside naupaka and mountaintop naupaka being representative of their reunion.