Knowlton's miniature cactus
... that the rare and endangered Knowlton's miniature cactus is considered to be an adult when it exceeds 10 millimetres (0.39 in) in diameter?
... that the rare and endangered <b id="mwAgc"><a href="./Pediocactus_knowltonii" id="mwAgg" rel="mw:WikiLink" title="Pediocactus knowltonii">Knowlton's miniature cactus</a></b> <i id="mwAgk">(pictured)</i> is considered to be an adult when it exceeds <span about="#mwt22" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"10"},"2":{"wt":"mm"}},"i":0}}]}' id="mwAgo" typeof="mw:Transclusion">10 millimetres (0.39</span><span about="#mwt22" typeof="mw:Entity"> </span><span about="#mwt22">in)</span> in diameter?