Flora of the Hawaiian Islands
Dicotyledon Literature for Psychotria kaduana
Wagner et al., 1990, 1999.
   Rubiaceae -- The Coffee Family Bibliography
      Psychotria kaduana

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

Rubiaceae - Psychotria kaduana

Click here for detailed USGS map by Jonathan Price
Trees or shrubs 2-4(-8) m tall; branches grayish, yellowish, or dark brown.
Leaves membranous, chartaceous, or coriaceous, obovate to oblanceolate or elliptic, 2.5-14.5 cm long, 0.9-6 cm wide, lateral veins 6-14 pairs, tertiary veins often conspicuously reticulate, marginal ribs moderately, weakly, or not at all developed, usually glabrous, lower surface sometimes puberulent, occasionally with small domatia less than 0.5 mm long in vein axils, apex rounded, obtuse, or acute, often with an abrupt, short, but wide point, base cuneate or acuminate, occasionally attenuate, or rarely rounded, subsessile or with slender petioles up to 2.5 cm long, stipules broadly obovate, up to 8 mm long.
Flowers functionally unisexual, 4-5(6)-merous, inflorescences with 1 main axis and 2-3 nodes of verticillate branching, often pendent, at least in fruit, branches 0.3-5.5 mm long and often branched again, the ultimate branches terminated by a 3-flowered cymule, peduncles (0.2-)1.6-6.5(-15.5) cm long, all branches subtended by short bracts, these wider than long and caducous; calyx 1.5-2 mm long at anthesis, slightly expanded or occasionally flared toward apex, apex truncate or with very shallow lobes, glabrous or occasionally pubescent; corolla tube ca. 1.5 mm long at anthesis, usually glabrous, throat sometimes pubescent, the lobes usually relatively thin, ovate to nearly subulate, 1-3 mm long; filaments of staminate flowers ca. 1 mm long at anthesis; anthers attached at base, ovate-oblong, 0.8-1.2 mm long (staminodes present in pistillate flowers); ovary turbinate, 1.5-2 mm long; style 1.5-3 mm long; stigmas divaricate, ca. 1 mm long, appressed and smaller in staminate flowers, usually pubescent.
Fruit pyriform or ellipsoid, 5-15 mm long, often with a narrow disk protruding prominently from within the remnant calyx, pyrenes hemispherical in cross section, with a T-shaped invagination of the seed coat on the ventral surface.