Abstract Melo, J. I. M.; G. M. Antar, L. P. Silva & T. S. Silva. 2021. New records in Brazil reveal a disjunct distribution for Cordia weddellii (Cordiaceae). Darwiniana, nueva serie 9(2): 320-328. Cordia weddellii, a species of Cordia sect. Cordia (Cordiaceae, Boraginales) endemic to South America is recorded for the first time in Brazil, growing in Cerrado vegetation in Bahia and Tocantins states. A distribution map, photographs, comments on the habitat and phenology, and a preliminary conservation assessment are provided for the species. Additionally, we provide a lectotype for C. weddellii.

Resumen Melo, J. I. M.; G. M. Antar, L. P. Silva & T. S. Silva. 2021. Nuevos registros en Brasil revelan una disyunción de Cordia weddellii (Cordiaceae). Darwiniana, nueva serie 9(2): 320-328. Cordia weddellii, una especie de Cordia sect. Cordia (Cordiaceae, Boraginales) endémica de Sudamérica fue registrada por primera vez en Brasil, creciendo en la vegetación de Cerrado en los estados de Bahía y Tocantins. Se presentan un mapa de distribución, fotografías, notas sobre ambientes y fenología reproductiva, y una evaluación preliminar del estado de conservación de la especie. Además, se designa lectotipo para C. weddellii.

In the present work, leaves of Pentacalia desiderabilis (Asteraceae) were subjected to extraction using aqueous 1-butyl-3-methylimidazolium bromide (BMImBr) in the microwave assisted extraction (MAE). The obtained extract was partitioned using CH2Cl2 and antifungal activity against Cladosporium cladosporioides and C. sphaerospermum of the organic phase was evaluated. Sequentially, this material was subjected to several chromatographic procedures to afford four quinoid derivatives identified as jacaranone (1), methyl-jacaranone (2), quinolacetic acid (3), and methyl 1-hydroxy-4-oxo-cyclohexaneacetate (4), being the first occurrence of compounds 2 - 4 in P. desiderabilis. Isolated quinoid derivatives were submitted to bioautography assay and the obtained results indicated that compounds 1 - 3 are active against Cladosporium cladosporioides (0.78, 12.5 and 12.5 µg, respectively) and C. sphaerospermum (3.13, 12.5 and 12.5 µg, respectively).