Rose [Cereus undatus Haw.; C. triangularis sensu Hawaiian botanists, non L.] (nat) Night-blooming cereus, panini- okapunahou, papipipua
Sprawling terrestrial or epiphytic vines; stems 3-winged, the wings 2-3 cm wide, thin, crenate with calloused margins. Areoles with 1-4 conical spines 1-3 mm long. Flowers nocturnal, 25-30 cm long, 15-25cm in diameter; sepaloid perianth parts greenish white, linear to linear-lanceolate, 10-15 cm long, 1-1.5 cm wide, inner perianth parts white, oblanceolate, 10-15 cm long, ca. 2.5 cm wide; staminal filaments cream-colored; style cream-colored, 17.5-20 cm long; stigma lobes up to 24, cream-colored. Berries red, fleshy, splitting, oblong, 5-12.5 cm long, 4-9 cm in diameter. [2n = 22.] Native to Central America, but extensively cultivated for its flowers and fruit throughout the New and Old World tropics; in Hawaii widely cultivated on all of the main islands, rarely setting fruit, but spreading, often extensively, vegetatively. Apparently introduced to 0‘ahu about 1830 from cuttings brought by the Brig Ivanhoe (Degener, 1932a). This species forms the well-known hedge at Punahou School in Honolulu.