Flora of the Hawaiian Islands
Dicotyledon Literature for Polyscias oahuensis
Wagner et al., 1990, 1999.
   Araliaceae -- The Ginseng Family Bibliography
      Polyscias oahuensis
General Information
DistributionIn the Hawaiian Islands, endemic to Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.
















Click here for detailed USGS map by Jonathan Price
Habit
Trees 3-10 m tall.
Leaves
Leaves 15-35 cm long, leaflets 7-15, broadly elliptic or ovate to narrowly oblong-elliptic, 5-13 cm long, 2.5-8 cm wide (the lowest pair often smaller), glabrous, apex rounded to acute, rarely acuminate, base cuneate to rounded or truncate, occasionally subcordate, often oblique, petiolules 5-18 mm long.
Flowers
Flowers in erect, 2-3 times compound-umbellate or rarely racemose-umbellate inflorescences, primary axis very short or absent, secondary axes (rays) 7-15(-18) cm long, with 1 to several bract scars along their length (these rarely producing a lateral umbellule), each with a terminal umbellule of flowers, or several tertiary axes, these then with a terminal umbellule of flowers, pedicels 6-18 mm long, elongating up to 22 mm long in fruit; calyx a low, undulate rim, the lobes poorly defined; petals 5-7(8), pinkish or yellowish green, lanceolate to triangular, 6-9 mm long; stamens 5-25(-30), in a single whorl; ovary fully to ¾ inferior, 3-8-carpellate, surmounted by a flat to conical nectary disk; styles absent or connate into a narrow stylopodium up to 2 mm high; stigmas 3-8, sessile.
Fruit
Fruit blackish purple at maturity, globose or ovoid to subcylindrical (often strongly ribbed when dry), 7-15 mm long, the disk flat to conical.
Chromosomes
2n = 48*