Earliest records of Oxalis corniculata by country

<p><em>Oxalis corniculata</em>&nbsp;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&nbsp;Lourteig (1979).</p> <p>Custom data export (3rd&nbsp;Sept 2015).&nbsp;<a href="https://doi.org/10.15468/cdl.xxxx">https://doi.org/10.15468/dl.nuaaek</a>&nbsp;Available from&nbsp;<a href="https://www.gbif.org/occurrence/download/0001780-150831095807960">https://www.gbif.org/occurrence/download/0001780-150831095807960</a>&nbsp;[4th August&nbsp;2018]</p> <p>Custom data export (1st March 2016).&nbsp;<a href="https://doi.org/10.15468/dl.bdlcpo">https://doi.org/10.15468/dl.bdlcpo</a>&nbsp;Available from&nbsp;<a href="https://www.gbif.org/occurrence/download/0003355-180730143533302">https://www.gbif.org/occurrence/download/0003355-180730143533302</a>&nbsp;[4th August&nbsp;2018]</p> <p>Lourteig, A. (1979). Oxalidaceae extra-austroamericanae: 2. Oxalis L. Sectio Corniculatae DC. <em>Phytologia</em>, 42, 57&minus;198. <a href="https://www.biodiversitylibrary.org/part/38832">https://www.biodiversitylibrary.org/part/38832</a></p>