Eighty-two species are recognized in the present revision of South American Draba L., of which D. humbertii Al-Shehbaz, D. quearaensis Al-Shehbaz, and D. yungayensis Al-Shehbaz are described as new from Venezuela, Bolivia, and Peru, respectively. The generic limits and current knowledge of molecular, cytological, breeding systems, and distributional data are briefly discussed primarily in connection with the South American representatives. Lectotypes are designated for Nesodraba Greene and 32 species and infraspecific taxa, including D. aretioides Humb. & Bonpl., D. aretioides var. leiocarpa O. E. Schulz, D. atuelica Chodat & Wilczek, D. atuelica var. histutior O. E. Schulz, D. benthamiana Gilg, D. brackenridgei A. Gray, D. cheiranthoides Hook. f., D. cheiranthoides var. leiocarpa O. E. Schulz, D. chodatii O. E. Schulz var. subtorta O. E. Schulz, D. cryptantha Hook. f., D. depressa Hook. f., D. discoidea Wedd., D. extensa Wedd., D. farsetioides Linden & Planch., D. gilliesii Hook. & Arn., D. grandiflora Hook. & Arn., D. hemsleyana Gilg, D. herzogii O. E. Schulz, D. obovata Benth. var. dasycarpa O. E. Schulz, D. pachythyrsa Triana & Planch., D. pamplonensis Planch. & Linden, D. pickeringii A. Gray, D. pseudoeuryops Linden & Planch., D. pulvinata Turcz., D. rosularis Chodat & Wilczek, D. schoenleinii F. Meigen, D. scopulorum Wedd., D. scopulorum var. elongata Wedd., D. siliquosa Hook. f. var. antisana Hook. f., D. splendens Gilg, D. thlaspiformis (Phil.) Al-Shehbaz, and D. violacea Humb. & Bonpl. Two other taxa are synonymized here under whatfollows in parentheses: D.macleaniiHook. f. var. stylosa A. Gray (=D. pickeringii) and D. solitaria O. E. Schulz (=D. ochropetala O. E. Schulz). Draba confertifolia Turcz. and D. pycnophylla Turcz. are reported here for the first time as new to Colombia, D. discoidea and D. soratensis Wedd. as new to Peru, and D. cuzcoensis O. E. Schulz as new to Bolivia.

Carex phleoides Cav. is the largest species of the former genus Uncinia Pers. It is widely distributed in the Neotropics and is also known from the Juan Fernández archipelago off the coast of Chile. A second taxon, U. trichocarpa C. A. Mey., is often considered a synonym of C. phleoides, but also sometimes a variety of that species or even a distinct species. We performed a morphometric study using representative material covering the entire distribution and morphological variation of C. phleoides s.l. to clarify its taxonomy. Our analyses revealed that U. trichocarpa is distinct from C. phleoides. Accordingly, we coined the name C. quinquin Jim.-Mejías & Dorr to accommodate this species under Carex L. because combinations of other available names are all blocked. Carex phleoides displayed two extremes of variation with geographical correspondence, a southern form in the Southern Cone north to Bolivia, and a northern one ranging from Bolivia to Mexico. We propose to recognize two subspecies within C. phleoides, the nominate subspecies being the southern one, and the northern one based on the epithet koyamae. Plants from the Juan Fernández archipelago were shown to be morphologically intermediate with the endemic C. plurinervata J. R. Starr, a result that might point to introgression between these two species. We selected lectotypes for nine names, including two of the accepted ones, as well as their synonyms.

Psoralea acaulis Hoffm. is a very peculiar and taxonomically isolated species of the tribe Psoraleeae, occurring in the Caucasian territories. Currently, this tribe contains 10 distinct genera, well differentiated morphologically. Due to some morphological similarities, P. acaulis was attributed to Bituminaria Heist ex Fabr., a genus with a Mediterranean–Macaronesian distribution. However, as it has many characters, some of which are autapomorphic, it was assigned its own subgenus: Christevenia Barneby ex C. H. Stirt. In light of detailed cladistic and phylogenetic analyses, this arrangement is taxonomically questionable and rather controversial. In order to clarify its status, extensive macromorphological, micromorphological, karyological, and palynological investigations of the currently known species of Bituminaria and all other genera of the tribe Psoraleeae were carried out. This allowed us to establish that P. acaulis should be placed in a separate genus in this tribe. According to the cladistic analysis of all known genera of Psoraleeae, this new monospecific genus, named Kartalinia Brullo, C. Brullo, Cambria, Acar, Salmeri & Giusso, is morphologically and karyologically very distinct and taxonomically isolated from Bituminaria, as well as from the other members of Psoraleeae. In this paper, the morphology and micromorphology of pod and seed testa, pollen grains, and seedlings; the karyology (2n=22); ecology; conservation status; and chorology of K. acaulis (Hoffm.) Brullo, C. Brullo, Cambria, Acar, Salmeri & Giusso are examined. An analytical key to all genera of Psoraleeae is also provided.