The following Participating Institutions are custodians for this species in the CPC National Collection:
Harold L. Lyon Arboretum
The conservation of Delissea undulata ssp. undulata is fully sponsored.
Nellie Sugii contributed to this Plant Profile.
Delissea undulata subspecies undulata is an unusual palm-like tree that was observed in the late nineteenth century on western Hawaii in North and South Kona. It was last found in South Kona at Pu`u Lehua in 1971, but was later thought to be extinct. In 1992, a single adult individual was rediscovered at Pu`u Waawaa, Hawaii. This lone plant probably survived as a result of being pushed over the entrance of a collapsing lava tube, making it inaccessible to grazing cattle. This wild individual continues to be threatened by extinction due to its precarious growing situation.
Luckily, this plant was observed in flower in August 1992, which resulted in fruit production and fertile seed. Approximately 50 seedlings were outplanted within 3 exclosures at Pu`u Waawaa, Waihou
Forest Reserve and in July of 1995, these outplanted individuals were observed in flower.
Distribution & Occurrence
Occurs in dry and mesic forests at elevations of about 3,300-5,700 ft in open forest. (USFWS 1996; Wagner et al. 1999)
(USFWS 1996, 2001)
Conservation, Ecology & Research
(USFWS 1996, 2001)
In April, 2002, the U.S. Fish and Wildlife Service determined that a designation of critical habitat was prudent for this species. (USFWS 2002)
Feral and domestic animal control
Plant biology and physiology studies
Lammers, T.G. 1988. New taxa new names and new combinations in the Hawaiian Lobelioidea campanulaceae. Systematic Botany. 13, 4: 496-508.
USFWS. 1994. Proposed Endangered Status for the Plant Delissea undulata (No Common Name). Federal Register. 59, 122: 32946-32951.
USFWS. 1994. Reopening of Comment Period on Proposed Endangered Status for Delissea undulata (No Common Name). Federal Register. 59, 189: 49907.
USFWS. 1996. Endangered Status for the plant Delissea undulata (No Common Name). Federal Register. 61, 198: 53124-53150.
USFWS. 2002. Revised Determinations of Prudency and Proposed Designations of Critical Habitat for Plant Species From the Islands of Maui and Kahoolawe. Federal Register. 67, 64: 15856-15987.