Ruth mary tristram, 19001914, phyteuma sieberi, Ruth Mary Tristram, 2 January 1907

Painting by the botanist ruth mary tristram guess 1907 as the date ruth mary tristram (25 april 1886 – 22 october 1950) was a british amateur botanist. [1] phyteuma sieberi. Date: 2 January 1907.