Rubiacearum Americanarum Magna Hama Pars XIX. New species of Palicourea (Psychotrieae) from Ecuador, Peru, and Venezuela

Abstract

Abstract Eight new South American species of Palicourea are described and illustrated: P. crystallina from north-central Peru differs from P. loxensis from Ecuador, also described herein, by its longer calyx limbs, 1.2–2.5 mm long, with the lobes often unequal in length; P. cutucuana from southern Ecuador differs from P. angustifolia in its broader leaves and inflorescences and larger corollas; P. gelsemiiflora of northern Peru is distinguished by its pedicels 11–20 mm long, calyx limbs 7–11 mm long, relatively large yellow corollas with tubes 32–33 mm long, relatively large fruits 12–13 mm long, and pyrenes with an unusual spongy wall; P. gemmiflora of southern Ecuador and northern Peru differs from P. subtomentosa by its longer corollas with horn-like projections on the abaxial surfaces of the lobes; P. lemoniana of southwestern Venezuela differs from P. nitidella by its corolla tubes 17–18 mm long with the lobes pubescent abaxially and from P. grandiflora by its secondary leaf veins only 7–10 pairs and...