Echinocereus reichenbachii
... that the flowers of Echinocereus reichenbachii open for just one day?
... that the flowers of <i id="mwCIk"><b id="mwCIo"><a href="./Echinocereus_reichenbachii" id="mwCIs" rel="mw:WikiLink" title="Echinocereus reichenbachii">Echinocereus reichenbachii</a></b></i> open for just one day?