Earliest records of Oxalis corniculata by country

<em>Oxalis corniculata</em> L. is a weed with a global distribution. Here I have gathered first observations of this species in as many countries as possible. These data come from human observations, historic literature, herbarium specimens and paleobotanical studies. Many of these records come from the Global Biodiversity Information Facility at the references below, but also the monograph of Lourteig (1979). Custom data export (3rd Sept 2015). https://doi.org/10.15468/dl.nuaaek Available from https://www.gbif.org/occurrence/download/0001780-150831095807960 [4th August 2018] Custom data export (1st March 2016). https://doi.org/10.15468/dl.bdlcpo Available from https://www.gbif.org/occurrence/download/0003355-180730143533302 [4th August 2018] Lourteig, A. (1979). Oxalidaceae extra-austroamericanae: 2. Oxalis L. Sectio Corniculatae DC. <em>Phytologia</em>, 42, 57−198. https://www.biodiversitylibrary.org/part/38832