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

Common name(s): pittosporum, ha`awa, ho`awa, ho`awa lau nui
General Information
DistributionIn the Hawaiian Islands, endemic to Kaua`i.

Pittosporaceae - Pittosporum kauaiense Pittosporaceae - Pittosporum kauaiense

Click here for detailed USGS map by Jonathan Price
Small trees 4-10 m tall, young parts and inflorescences pale brown strigose-tomentose; branches whitish to pale brown flocculose-strigose to subglabrate.
Leaves chartaceous to slightly coriaceous, moderately rugose, elliptic to broadly or occasionally narrowly obovate, (4-)9-27 cm long, (2-)3.5-11 cm wide, lateral veins 15-21 pairs, upper surface with slightly impressed veins, at least sparsely whitish flocculose-strigose when young, soon glabrate, lower surface with slightly raised veins, usually moderately whitish or occasionally brown turning whitish flocculose-strigose, occasionally sparsely so, margins entire, sometimes slightly revolute, apex short-acuminate to acute, base attenuate, petioles 0.8-3 cm long.
Flowers unisexual, 7-13 in axillary or cauline, simple, corymbose inflorescences, peduncles 3-10(-20) mm long, pedicels 2-6 mm long, bracts subulate, 1-5 mm long; calyx cup-shaped, sepals distinct, lanceolate to ovate, 2-3 mm long, pale brown tomentulose, apex acute; petals white, 12-13 mm long; filaments 5-6 mm long, those of pistillate flowers 3-4 mm long; fertile anthers 1.5-2.3 mm long, those of pistillate flowers ca. 1 mm long; ovary 2-carpellate.
Capsules subglobose to subcuboid, 9-20 mm long, brown or pale brown tomentose when immature, glabrate at maturity, apex rounded to obtuse, the persistent style 2-4 mm long, the valves with woody exocarp 2.5-3.5 mm thick, ± with a median furrow, the surface shallowly to deeply rugose-tuberculate, the troughs between the convolutions narrow, sometimes obscured, seed mass filling the capsule volume.
Seeds ca. 10-18, black to brown, irregularly angled and compressed, 6-9 mm long.