Flora of the Hawaiian Islands
Dicotyledon Literature for Psychotria greenwelliae
Wagner et al., 1990, 1999.
   Rubiaceae -- The Coffee Family Bibliography
      Psychotria greenwelliae
General Information
DistributionIn the Hawaiian Islands, endemic to Kaua`i.

Click here for detailed USGS map by Jonathan Price
Slender trees up to 5 m tall; branches chestnut to grayish brown.
Leaves thick or thin, coriaceous, obovate, oblanceolate-oblong, or elliptic-oblong, 2.2-14 cm long, 1.5-7 cm wide, lateral veins 6-11 pairs, tertiary veins often conspicuously reticulate, glabrous or occasionally hirtellous, particularly in axils of veins, domatia absent or small, often with whitish or brownish hairs within them, apex acute to obtuse or sometimes rounded, base attenuate to narrowly or broadly cuneate, petioles 0.2-2.5 cm long, stipules up to 8 mm long, often with elongated apices.
Flowers usually functionally unisexual, 4-5-merous, inflorescences with 1 main axis and 1-2 nodes of verticillate branching, branches usually less than 5 mm long and usually terminated by a 3-flowered cymule, the central and oldest flower of each sessile on the branches and the 2 lateral ones on short pedicels, branches subtended by small, caducous bracts; calyx 1-2 mm long, often flared toward apex, apex truncate or with minute rounded lobes; corolla tube up to 3 mm long, slightly expanded toward apex, throat glabrous, the lobes ovate or lanceolate, 4-6.5 mm long, strongly reflexed; filaments of staminate flowers up to 2.5 mm long at anthesis; anthers attached at base, oblong, 1.5-2 mm long; ovary 2-4 mm long; style 5-6 mm long; stigmas 1-2 mm long, puberulent or papillose.
Fruit globose-pyriform, 10-13 mm long, often with a broad disk at apex, pyrenes hemispherical in cross section, usually with a large T-shaped invagination of the seed coat on the ventral side.