Flora of the Hawaiian Islands
Dicotyledon Literature for Rauvolfia sandwicensis
Wagner et al., 1990, 1999.
   Apocynaceae -- The Dogbane, Milkweed Family Bibliography
      Rauvolfia sandwicensis

Common name(s): hao
General Information
DistributionIn the Hawaiian Islands, endemic to Ni`ihau, Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.

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Trees or shrubs 3-10(-13?) m tall; branches short and stiff, striate, the leaf scars conspicuous.
Leaves in whorls of 3-5 per node, narrowly elliptic, sometimes broadly elliptic, rarely oblanceolate or narrowly obovate, 6-16(-22) cm long, (1.5-)2.5-6(-6.5) cm wide, glabrous, margins entire, apex acute, rarely retuse or rounded, petioles 1.5-4.5 cm long, leaf axils with pectinate glands divided into 5-12 linear lobes.
Flowers in compound cymes, these at first terminal but soon becoming lateral, peduncles 1-6 cm long, pedicels 0.5-2 mm long, bracts lanceolate to ovate, 3 mm long; calyx broadly ovate, 1-8(-10) mm long, margins pale and conspicuously erose; corolla salverform, the tube 3-10 mm long, the lobes with a pale green center, 1-3 mm long, conspicuously erose; stigma subtended by a narrow ring of hairs.
Fruit a bilobed drupe, green, becoming purplish black at maturity, obcordate, rarely 1 of the lobes aborted, ca. 8-16 mm long, ca. 6-20 mm wide.
Seed strongly flattened, ca. 1 cm long, 0.5 cm wide.
2n = 44*