Torres-Leite, F.; Bruniera, C. P.; Zappi, D. C.; Carrijo, T. T.

True Axillary Inflorescences in Rudgea (Palicoureeae, Rubiaceae), a Newly Reported Characteristic of two new Brazilian species, R. quisquiliae and R. axilliflora

. Phytotaxa 2016, 272, 191–200.