This study aimed to recognize the floristic composition, the life form and the distribution of species of climbing plants occurring on 2 rock outcrops in the state of Pernambuco. Monthly botanical collections were made from February to September 2015 at Pedra do Cruzeiro (08°09′02.9″ S, 035°45′22.3″ W), municipality of Bezerros and Pico do Papagaio (07°49′25.7″ S, 038°03′14.8″ W), municipality of Triunfo. Fertile specimens were collected following the standard methodology in taxonomy. A total of 58 species were identified from the 2 areas, all widely distributed in Brazil and belonging to 20 botanical families. Apocynaceae, Convolvulaceae, Bignoniaceae, Dioscoreaceae and Fabaceae comprise 60% of all species. The predominant life form was phanerophyte (62%). As for the growth form, 67% of the climbers are herbaceous vines. The adaptation of twining was observed in 69% of species. Six new records for the state of Pernambuco were also identified. The rock outcrops studied show high species richness in relation to the found for climbers in other rock outcrops in the Brazilian Northeast Region. Key wordsCaatinga; flora; Neotropics; plant diversity; seasonal dry forest; vines.

The objective of this study was to characterize the galls of Clusia nemorosa G. Mey (Clusiaceae). We selected 30 young plants in trails of Refugio Charles Darwin, an Atlantic forest fragment in Pernambuco, Brazil. The height of each plant was measured and the number of leaves, leaves with galls, and galls per leaf were counted. Leaves with galls were collected from ten specimens and brought to laboratory to be described and to have the inductor observed. We observed galls in only ten individuals of the thirty initially selected. The number of galls per plant varied from 3 to 336. Out of 1,399 leaves inspected, 541 galls were counted in 137 leaves. The galls were deep green, elliptical, crossing the abaxial and adaxial leaf surfaces, preferentially located at the center of the leaf (H=23,48; p<0.01; n=137), but with 49% at the leaf margin. The galls had 5.5 mm and 4.7 mm bearing one larval chamber with one larvae, and were induced by an unidentified species of Hymenoptera. Keywords: Cecidomyiidae, trophic interaction, plant-herbivore interaction, herbivory, galls.