Wikipedia:Main Page history/2018 May 14

 Welcome to Wikipedia, the free encyclopedia that anyone can edit. 5,648,864 articles in English  Arts Biography Geography History Mathematics Science Society <li style="position:absolute; left:66%; top:1.6em;">Technology</li> <li style="position:absolute; left:66%; top:3.2em;"> All portals </li> </ul>

<div id="mp-middle" class="MainPageBG" style="margin-top:4px; border:1px solid #f2cedd; background:#fff5fa; overflow:auto;"> <h2 id="mp-tfl-h2" style="margin:0.5em; background:#f2cedd; font-family:inherit; font-size:120%; font-weight:bold; border:1px solid #bfa3af; color:#000; padding:0.2em 0.4em">From today's featured list <div class="thumbinner mp-thumb" style="background: transparent; border: none; padding: 0; max-width: 125px;"> A flower from the Ranunculus auricomus complex, part of the Ranunculus genus There are 57 genera of flowering plants estimated to contain at least 500 described species. The largest of these is currently the legume genus Astragalus (milk-vetches), with over 3,000 species. The sizes of plant genera vary widely from those containing a single species to genera containing thousands of species, and this disparity became clear early in the history of plant classification. The largest genus in Carl Linnaeus' seminal Species Plantarum was Euphorbia, with 56 species; Linnaeus believed that no genus should contain more than 100 species. Part of the disparity in genus sizes is attributable to historical factors. According to a hypothesis published by Max Walters in 1961, the size of plant genera is related to the age, not of the taxon itself, but of the concept of the taxon in the minds of taxonomists. The introduction of infrageneric taxa (such as the subgenus, section and series) in the 19th century by botanists including Augustin Pyrame de Candolle allowed the retention of large genera that would otherwise have become unwieldy. (Full list...)

Recently featured: <div id="mp-lower" class="MainPageBG" style="margin-top:4px; border:1px solid #ddcef2; background:#faf5ff; overflow:auto;"> <h2 id="mp-tfp-h2" style="margin:0.5em; background:#ddcef2; font-family:inherit; font-size:120%; font-weight:bold; border:1px solid #afa3bf; color:#000; padding:0.2em 0.4em">Today's featured picture
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