<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:14px"><div><span></span></div><div id="yui_3_16_0_1_1430520011033_4599" dir="ltr">It really just happened. species, genus and taxon as tags came into existence at similar times. It may well be that my use of taxon was inspired by your own initiative on Flickr.</div><div id="yui_3_16_0_1_1430520011033_4600" dir="ltr"><br></div><div id="yui_3_16_0_1_1430520011033_4601" dir="ltr">Currently the position is very simple:</div><div id="yui_3_16_0_1_1430520011033_4604" dir="ltr"><br></div><ul id="yui_3_16_0_1_1430520011033_4759" dir="ltr"><li><div id="yui_3_16_0_1_1430520011033_4602">species and genus are preferred tags for taxon:species and taxon:genus</div></li><li><div id="yui_3_16_0_1_1430520011033_4612">species and taxon are often, but by no means always, tag synonyms.</div></li></ul><div id="yui_3_16_0_1_1430520011033_4662" dir="ltr"><br></div><div id="yui_3_16_0_1_1430520011033_4663" dir="ltr">There is little harm in duplicating keys for taxon & species, and in practice genus is nearly always useful (if valid) with either tag. This is because parsing the range of potential values in taxon or species can be a real pain.</div><div id="yui_3_16_0_1_1430520011033_4671" dir="ltr"><br></div><div id="yui_3_16_0_1_1430520011033_4758" dir="ltr">The tree import in Vienna shows very well how these tags can work together, when a tree is a known cultivar. The tagging uses something like:</div><div id="yui_3_16_0_1_1430520011033_4672" dir="ltr"><br></div><blockquote id="yui_3_16_0_1_1430520011033_4757" style="margin-right: 0px;" dir="ltr"><div id="yui_3_16_0_1_1430520011033_4673" dir="ltr">genus=Populus</div><div id="yui_3_16_0_1_1430520011033_4674" dir="ltr">species=Populus nigra</div><div id="yui_3_16_0_1_1430520011033_4675" dir="ltr">taxon=Populus nigra 'Italica'</div><div id="yui_3_16_0_1_1430520011033_4676" dir="ltr">taxon:cultivar='Italica'</div></blockquote><div id="yui_3_16_0_1_1430520011033_4677" dir="ltr"><br></div><div id="yui_3_16_0_1_1430520011033_4678" dir="ltr">There were objections to using taxon on the basis that people wouldn't know what it meant: my feeling is that if you are confidently identifying trees to species then it is likely that you do!</div><div id="yui_3_16_0_1_1430520011033_4800" dir="ltr"><br></div><div id="yui_3_16_0_1_1430520011033_4801" dir="ltr">Of course there are lots of rubbish values in both sets of tags (check out Bologna), and funny problems exist with names for certain species such as London Plane, where the accepted name in the UK may be different from other European countries. It may also be useful to have some sort of convention for species:iso2cd and genus:iso2cd along the lines of "Pedunculate Oak" for the case where the vernacular name corresponds to the taxon, and "oak" where the vernacular name is more generic.</div><div id="yui_3_16_0_1_1430520011033_4834" dir="ltr"><br></div><div dir="ltr">Jerry Clough</div><div id="yui_3_16_0_1_1430520011033_4680" dir="ltr"><br></div><div id="yui_3_16_0_1_1430520011033_4679" dir="ltr"><br> </div><div id="yui_3_16_0_1_1430520011033_4551" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 14px;"> <div id="yui_3_16_0_1_1430520011033_4550" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 16px;"> <div id="yui_3_16_0_1_1430520011033_4549" dir="ltr"> <hr size="1" id="yui_3_16_0_1_1430520011033_4563"> <font face="Arial" size="2"> <b><span style="font-weight: bold;">From:</span></b> Andy Mabbett <andy@pigsonthewing.org.uk><br> <b><span style="font-weight: bold;">To:</span></b> "Tag discussion, strategy and related tools" <tagging@openstreetmap.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Monday, 27 April 2015, 16:44<br> <b><span style="font-weight: bold;">Subject:</span></b> [Tagging] Tag:natural=tree and taxon names<br> </font> </div> <div class="y_msg_container"><br>The wiki page for "Tag:natural=tree:"<br><br> <a href="http://wiki.openstreetmap.org/wiki/Tag:natural%3Dtree" target="_blank">http://wiki.openstreetmap.org/wiki/Tag:natural%3Dtree</a><br><br>includes:<br><br> taxon=*<br><br>and:<br><br> species=*<br> genus=*<br><br>The latter pair is a subset of the former; and thus redundant.<br><br>How should this be resolved?<br><br>-- <br>Andy Mabbett<br>@pigsonthewing<br><a href="http://pigsonthewing.org.uk/" target="_blank">http://pigsonthewing.org.uk</a><br><br>_______________________________________________<br>Tagging mailing list<br><a href="mailto:Tagging@openstreetmap.org" ymailto="mailto:Tagging@openstreetmap.org">Tagging@openstreetmap.org</a><br><a href="https://lists.openstreetmap.org/listinfo/tagging" target="_blank">https://lists.openstreetmap.org/listinfo/tagging</a><br><br><br></div> </div> </div> </div></body></html>