Literature for Psychotria hexandra Wagner et al., 1990, 1999. Literature for Psychotria hexandra var. hexandra Wagner et al., 1990, 1999. Literature for Psychotria hexandra var. oahuensis Wagner et al., 1990, 1999.
Rubiaceae -- The Coffee Family	Bibliography
Psychotria hexandra

General Information
Distribution	Hawaiian Islands.
Habit	Trees or shrubs up to 6 m tall.
Leaves	Leaves membranous, chartaceous, or coriaceous, obovate to oblanceolate, 3.1-20.8 cm long, 1.3-9 cm wide, lateral veins 7-12 pairs, domatia small and inconspicuous, apex acute and often with a very pronounced, acute tip, base acute or attenuate, petioles 0.4-3 cm long at base, stipules irregularly obovate, up to 15 mm long.
Flowers	Flowers unisexual, usually 6-merous, inflorescences either with 1 main axis or 2-3-branched, or trichotomous from base, up to 12 cm long, with dichotomous branching, ultimate branches usually terminated by a 3-flowered cymule, central flower short-pedicellate or sessile, lateral flowers of the cymule usually sessile, subtended by opposite sterile bracts; calyx 4-5.5 mm long, expanded toward apex, truncate or lobed; corolla white, obtuse or acute in bud, the tube 6-13 mm long at anthesis, expanded toward apex, throat pubescent, the lobes narrowly ovate-subulate or linear, as long as the tube or much longer; staminal filaments short; anthers attached ca. 1/3 from base, narrow, somewhat curved, 4-6 mm long; ovary ca. 4 mm long at anthesis; style 4-6 mm long; stigmas 2-lobed, the lobes puberulent on inner surface.
Fruit	Fruit cylindrical to fusiform, broadly ellipsoid, or narrowly and asymmetrically ovoid, 8-18 mm long, 5-8 mm in diameter, usually crowned by the persistent calyx 2-4.5 mm long, pyrenes flat on ventral surface, dorsal surface angled, almost triangular in cross section, without invagination of the seed coat.