Format: ORAL

Milton Groppo1, Jacquelyn Ann Kallunki2, Carla P. Bruniera3, , Jos Rubens Pirani1, Carolina Ferreira1, , Paola Lima Ferreira4

1. University of São Paulo, Brazil 2. New York Botanical Garden, USA 3. Federal University of São Paulo, Brazil 4. Aarhus University, Denmark

Tribe Galipeeae (Rutaceae, Subfamily Zanthoxyloideae) is the largestgroup of Rutaceae in the Neotropical Region, with 33 genera and c. 181 species. The tribe is composed of two subtribes, Galipeeae(28 genera and c.130 species) and Pilocarpinae (5 genera, 51 species). Subtribe Galipeinae is different from Pilocarpinae by the possession ofzygomorphic flowers (v. actinomorphic flowers in Pilocarpinae)and by the constant presence of staminodes (v. all fertile stamensin Pilocarpinae.) A phylogenetic analysis was conducted to test themonophyly of Galipeeae and its two subtribes. A total of 120 terminals,representing 24 genera and 80 species of both subtribes weresampled. Species of Balfourodendron, Choisya, Helietta, Hortia,and Plethadenia, all from genera traditionally not included inGalipeeae were also used; Zanthoxylum, a phylogenetically distant genus was used as outgroup in all analyses. Molecular data included four regions, two from the cpDNA (trnL-trnF and rps-16) and two nuclear (ITS1 and ITS2) analyses. Parsimony and Bayesian analysis was conducted. Results showed all Galipeeae grouped in a strongly supported clade (Bootstrap Percentages BP-100% BP, Posterior Probabilities PP = 1); Subtribes Galipeeae and Pilocarpinae appear as sisters, both clades with strong support. Balfourodendron and Helietta appear as part of the Pilocarpinae and Hortia along with the Galipeinae. Critical morphological characteristics such as zygomorphic flowers, presence of staminodes, embryo and fruit characteristics are discussed in the light of the new produced phylogeny.