Daisy Annita Rice was a high school and music conservatory student at Tualatin Academy in Forest Grove, Oregon, around 1905-1909. She was originally from Clatskanie. Tualatin Academy was the college preparatory school that was attached to Pacific University. She likely attended a class there given by Charles Oscar Chambers, a professor of biology who taught a course on the botany of flowers.
From the guide to the Daisy Annita Rice Botanical Specimen Album, circa 1908, (Pacific University Archives)