Valve morphology of four species of Frustulia (Bacillariophyta), including two described as new
Navarretia furnissii (Polemoniaceae), a new diploid species from the intermountain western United States distinguished from tetraploid Navarretia saximontana
Linnaeus’s Plantæ Surinamenses revisited
Myrtaceae from lowland Atlantic Forest areas in the State of Pernambuco, Northeastern Brazil
Syngonanthus restingensis (Eriocaulaceae): A remarkable new species endemic to Brazilian coastal shrublands
A new combination in Entada (Leguminosae) from Roraima, Brazil
Two new species of Pavonia section Lebretonia subsection Hastifoliae (Malvaceae: Malvoideae) from southern Brazil
Orcularia, a segregate from the lichen genera Buellia and Rinodina (Lecanoromycetes, Caliciaceae)