Taxonomic Revision of Cuphea sect. Trispermum s.l. (Lythraceae)
A revision of the Aiphanes parvifolia complex (Arecaceae)
Navarretia furnissii (Polemoniaceae), a new diploid species from the intermountain western United States distinguished from tetraploid Navarretia saximontana
The Pteris aspericaulis complex in India (Pteridaceae)
Reestablishment of Plantago bradei (Plantaginaceae), an overlooked narrowly endemic species from Serra do Caparaó, eastern Brazil, and range extension of P. guilleminiana
A new species of Gastrochilus (Aeridinae, Vandeae, Orchidaceae) and a new record species from Yunnan, China
Counting counts: revised estimates of numbers of accepted species of flowering plants, seed plants, vascular plants and land plants with a review of other recent estimates
Systematics of the Adiantum philippense complex (Pteridaceae, Polypodiales) in Taiwan
The number of known plants species in the world and its annual increase