This kind of gluch, rain forest is most likely where you might find the uhi plant.
Photo from Kauila team.

 

Uhi

The uhi plant is the edible yam. It was introduced by the Polynesians. It came from South East Asia. The uhi is usually eaten as a carbohydrate. They are usually cooked or prepared in an imu. The uhi is not related to the sweet potato, which is often mistakenly called the yam.

Two other tuber-bearing vines, hoi and pi‘a, are sometimes called yams but, like the sweet potato should not be confused with the uhi. Uhi are planted from pieces of the tuber, or bear sprouts. They grow underground stems which are thick. They grow best in moist gulches and lower areas in the rain forest. The vines have to be supported, usually by trees. The vines grow during the summer and December. For edible plants to grow the soil must be warm, moist, and loose.

The tubers come in various colors, from white to red. Red uhi was used as a medicine for coughs, constipation, dysentery, appendicitis and for counteracting vomiting blood. The tubers can be lobed or elongated in shape depending on variety.

Bellow is a Hawaiian saying relating to Uhi.

He `ai make ka uhi. The yam is the food of death. The yam grows downward in the ground, instead of upward like the taro. When a person digs for yams he has to be on the watch while digging with head down low an enemy can strike hem on the back of the neck and kill him.

Bibliography:

Canoe Plants of Old Hawai‘i.Lynton Dowe White, web manager. 1994. Ho‘okela Hawai‘i. 6 Jan. 2007<http://www.canoe plants.com>

Life in Early Hawai‘i The Ahupua‘a. Kamehameha Schools Press: Honolulu, 1994.

Pukui, Mary kawena. ‘Ōlelo No‘eau Hawaiian proverbs and Poetical sayings. Honolulu: Bishop Museum Press, 1983