Flora of the Hawaiian Islands
Dicotyledon Literature for Opuntia ficus-indica
Wagner et al., 1990, 1999.
   Cactaceae -- The Cactus Family Bibliography
      Opuntia ficus-indica

Common name(s): prickly pear, panini, papipi
General Information
DistributionNative range unknown, although most likely Mexico, cultivated since ancient times, and now widely escaped and naturalized in warm parts of the world.In the Hawaiian Islands, naturalized on Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Kaho`olawe, Hawai`i.

Trees 3-5 m tall, with a definite trunk; joints dull green or gray when fresh, broadly obovate, 25-60 cm long, 20-40 cm wide, margins more or less entire.
Areoles spineless or with 1-6 white or yellowish spines 1-3 cm long.
Flowers 6-7 cm long, 5-7 cm in diameter; outer perianth parts yellow with a green or reddish median stripe, 10-20 mm long, 15-20 mm wide, inner perianth parts yellow to orangish yellow, rotate, 25-30 long, 15-20 mm wide; staminal filaments yellow; style greenish, ca. 15 mm long; stigma lobes 8-10.
Berries greenish white to yellow, yellowish brown, or reddish purple, depending on the strain, fleshy, barrel-shaped, 5-10 cm long, 4-9 cm in diameter.
2n = 22, 33, 44, 66, 88