Description

Key Characters:

Growth Form: Shrubs 0.8–3 m tall.

Stems: Stems unbranched or sparingly branched, glabrous or sparsely muricate.

Roots:

Leaves: Leaves simple. Alternate. Blades pinnately parted, cut 1⁄2–¾ the distance to the midrib, blades 25–60 cm long, 3.5–8 cm wide (between the segments), 8–25 cm wide (across the segments), segments 2–6 per side, narrowly oblong, 1–2.5 cm wide. Apex acute or obtuse. Upper surfaces glabrous; lower surfaces sparsely pubescent. Margins minutely callose–denticulate. Petioles 3–7 cm long. Stipules absent.

Flowers: Flowers in inflorescences 8–15–flowered, pubescent, peduncles 40–50 mm long, pedicels 10–15 mm long. Flowers bisexual (perfect); hypanthium obconical, 10–12 mm long, 6–8 mm wide, pubescent. Calyx lobes triangular, 3–5 mm long, 2–2.5 mm wide, apex obtuse. Corolla greenish white with purplish longitudinal stripes at base, 36–50 mm long, 4–5 mm wide, sparsely pubescent, the tube suberect to slightly curved, the lobes spreading. Stamens 5, alternate with corolla lobes, connate; staminal column white, sparsely pubescent at base; anthers glabrous, the lower 2 with apical tufts of white hairs. Ovary inferior, 2-celled; ovule placentation axile; stigma 2-lobed, wet or dry, appressed and nonreceptive as the style grows through the anther tube, pushing out the pollen, after which the stigmas spread apart and become receptive.

Fruit: Berries unknown. Seeds: mature seeds not seen.

Ploidy:

Habitat: Rare in diverse mesic forest; central Wai'anae Mountains; O'ahu. Last collected in 1965 (Carlquist & Parratt 1808; DUKE; MICH; RSA).

Elevation Range: