These were my predictions about phylogeny before the Miller et al. (2011) nuclear gene phylogeny (this page revised slightly Feb 2012).

1) Herbaceous, radial corolla thickenings absent, fruits black/purple (some collections of two species in this subgroup have mature green fruits), corolla rotate and closing for the night. Representative species: J. procumbens, J. repandidentata



2a) Woody, corolla rotate to infundibular, radial corolla thickenings absent, nectar clear (not red/orange), fruits orange or red. The corolla closing for the night on the species of this subgroup that have been studied (J. antillana, J. auriculata, J. lojae, J. sinuosa have been studied in the greenhouse). Representative species: J. antillana, J. auriculata, J. lezamae, J. lojae, J. nigricolor, J. nitida, J. oppositifolia, J. sanctae-martae, J. sinuosa.

2b) Woody, corolla short-tubular, fruits orange, nectar clear and radial corolla thickenings absent. The corolla not closing for the night on the species of this group that have been studied (J. cajamarca & J. sagastegui have been studied in the greenhouse). Representative species: J. cajamarca, J. hunzikeri, J. lomana, J. mionei, J. sagastegui, the sp. of Cerro Campana.

2c) Woody, corolla form variable, radial corolla thickenings present, producing red/orange nectar, fruits orange The corolla not closing for the night on the species of this group that have been studied (J. paneroi, J. sanchez-vegae, J. umbellata, J. ventricosa). Representative species: J. dendroidea, J. herrerae, J. paneroi, J. sanchez-vegae, J. umbellata, J. ventricosa, J. weberbaueri.

2d) Herbaceous, radial corolla thickenings absent, style tapers to nearly a point, and a ring of staminal tissue fused forming a bowl at the base of the flower, fruits green or orange. Representative species: J. aspera, J. calliantha. May have evolved from within lineage 2c, because these produce red-orange nectar.

"Radial corolla thickenings" are relatively thick radii of the corolla, forming nectar wells between. Jaltomata weberbaueri provides the clearest example, but these are also obvious in photos of J. dendroidea.

Follow this link for a complete list of Jaltomata species producing red/orange nectar red/orange nectar

For a chloroplast DNA phylogeny see Mione, T., R. C. Olmstead, R. K. Jansen and G. J. Anderson (1994).