Abstract
Five new species of Rubiaceae from Brazil, Psychotria isanae Kirkb., Palicourea veterinariorum Kirkb., Perama carajensis Kirkb., Borreria reflexa Kirkb. and Sipaneopsis cururuensis Kirkb., five new species of Rubiaceae from Colombia, Rudgea bracteata Kirkb., Psychotria gonzalagunioides Kirkb., Palicourea denslowiae Kirkb., Palicourea thermydri Kirkb. and Gonzalagunia congesta Kirkb., and one new variety of Rubiaceae from Colombia. Gonzalagunia discolor Standi, var. danielis Kirkb., are described. One new combination is made, Psychotria cotejensis (Standl.) Kirkb., and one new name established, Psychotria aviculoides Kirkb.