New species of Burmeistera (Campanulaceae: Lobelioideae) from Ecuador
Two new species of Pentacalia (Senecioneae, Compositae) from Peru
Prodromus of a fern flora for Bolivia. XXXV. Dryopteridaceae
Prodromus of a fern flora for Bolivia. XL. Polypodiaceae
Three new species of Freziera (Pentaphylacaceae, Freziereae) from Bolivia and Peru
Prodromus of a fern flora for Bolivia. XXXIX. Oleandraceae
Prodromus of a fern flora for Bolivia. XXIX. Aspleniaceae
Prodromus of a fern flora for Bolivia. III. Selaginellaceae
Cyathea leoniae (Cyatheaceae), a new pinnate-pinnatifid tree fern species from Northern Peru
Prodromus of a fern flora for Bolivia. XIX. Plagiogyriaceae