Monograph of (Solanaceae), a new hemiepiphytic genus endemic to the northern Andes.

A new genus, A.Orejuela & Särkinen, , is described in the tribe Solandreae (Solanaceae) consisting of four species of hemiepiphytic lianas endemic to the premontane forests of the Colombian and Ecuadorian Andes. The genus is distinguished based on the membranous leaves, usually sparsely pubescent with eglandular simple trichomes, pseudo-verticillate leaf arrangement, and elongated, pendulous, and few-flowered inflorescences with showy flowers and conical fruits. Three new combinations are made to transfer species to the new genus previously described as part of the polyphyletic genus Rich. ( (S.Knapp) A.Orejuela & Särkinen, , (A.Orejuela & J.M.Vélez) A.Orejuela & Särkinen, and (Hunz.) A.Orejuela & Särkinen, ). One new species is described from the western slopes of the eastern cordillera of the Colombian Andes, known only from three localities in the Boyacá, Santander, and Tolima departments ( A.Orejuela & Villanueva, ). The new species is unique in the genus in having glabrescent adult leaves, green-purplish calyces and long, greenish-white, infundibuliform corollas with delicate purplish veins and large lobes tinged with purple, and pubescent styles. Here we provide a revision of with a distribution map of all species, an identification key, photographs, preliminary conservation assessments, and line drawings of all four species.