Flora of the Hawaiian Islands
Dicotyledon Literature for Pittosporum confertiflorum
Wagner et al., 1990, 1999.
   Pittosporaceae Bibliography
      Pittosporum confertiflorum

Common name(s): pittosporum, ha`awa, ho`awa
General Information
DistributionIn the Hawaiian Islands, endemic to O`ahu, Lana`i, Maui, Hawai`i.

Click here for detailed USGS map by Jonathan Price
Shrubs or small trees 2-9 m tall, young parts and inflorescences densely reddish brown to brown or occasionally part pale brown and part whitish tomentose; branches reddish brown to brown tomentose, subglabrate.
Leaves subcoriaceous to coriaceous, moderately rugose, broadly to narrowly obovate or spatulate, (3.4-)7-30(-36) cm long, (1-)3-11 cm wide, lateral veins 9-22 pairs, upper surface with prominently impressed veins, ± pale brown to reddish brown tomentose, rarely whitish tomentose when very young, soon glabrate, lower surface with slightly raised veins, densely or moderately (primarily O`ahu) pale brown to reddish brown tomentose, rarely (East Maui) whitish tomentose, sometimes becoming more sparsely so on oldest leaves, margins entire, slightly to strongly revolute, apex obtuse to rounded or acute to occasionally short-acuminate, base attenuate, petioles (0.5-)1-5.5 cm long.
Flowers perfect or unisexual, 5-14 in terminal, axillary, or cauline, simple, corymbose inflorescences, peduncles 3-25(-55) mm long, pedicels usually slender, 2-32 mm long, bracts subulate to lanceolate, 3-12 mm long; calyx broadly cup-shaped, sepals distinct, lanceolate to broadly ovate or suborbicular, 2-7 mm long, both surfaces densely brown to reddish brown tomentose, apex obtuse, acute, or acuminate; petals white to cream, 13-23 mm long; filaments 5-9 mm long, those of pistillate flowers, when present, 3.5-4.5 mm long; fertile anthers 3-4 mm long, those of pistillate flowers, when present, sterile, ca. 1.5 mm long; ovary 2-carpellate.
Capsules ovoid to broadly ovoid, ± compressed, if so, then often oblong-ovoid, 20-35 mm long, densely brown to reddish brown tomentose, becoming sparsely so at maturity, apex rounded to obtuse, the usually persistent style ca. 3-4 mm long, the valves with woody exocarp 2-5 mm thick, with a median ridge or furrow, the surface strongly rugose to deeply rugose-tuberculate or sulcate, the troughs between the convolutions narrow, sometimes surface merely rugulose-roughened, seed mass filling the capsule volume.
Seeds ca. 30-50, black to brown or reddish black, irregularly angled and compressed or subreniform, 4-8 mm long.