I have searched and could only find the century plant (site below) and quotes regarding the once in a thousand year bloomer. One of the rarest I have known is the corpse flower. (site below) It is said there are flowers that bloom only once in a hundred years. Why should there not be some that bloom once in a thousand, in ten thousand years Perhaps we never knew about them simply because this "once in a thousand years" has come only today? - D-503, the hero in Yevgeny Zamyatin's We, 1920-1921 Twenty-Third Entry Mirra Ginsburg, trans., 1972 http://www.desertusa.com/feb97/du_pcentury.html http://news.nationalgeographic.com/news/2001/06/0605_flowerbloom.html