Abstract
AbstractI present here taxonomic and geographic notes to advance the taxonomic and geographic knowledge of the neotropical Commelina (Commelinaceae). More specifically, I re-establish C. dielsii, a yellow-flowered species only known from the type collected in north-eastern Argentina, which is morphologically allied to C. erecta and C. catharinensis; I lectotypify and re-establish C. longicaulis, and I present evidence that this is the correct name for the species currently being called C. schomburgkiana; I lectotypify C. pallida and C. scabra; and I also lectotypify the names C. gracilis and C. prostrata (synonyms of C. diffusa), C. angustifolia, C. bahiensis, C. caripensis, C. crispa, C. elegans, C. roseo-purpurea and C. sulcata (synonyms of C. erecta), and C. acuminata Kunth, C. cayennensis var. pubescens, C. coelestis, C. fasciculata, C. graminifolia and C. scapigera (synonyms of C. tuberosa). In total, 18 names are here lectotypified, and eight synonymisations are newly proposed. Furthermore, I also p...
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