Career
He collected and photographed plants for the Arboretum along China’s Yellow River for three years, 1909–1911. He was appointed Inspector of Forests to the Chinese Government. Rhododendron purdomii was named after him at the Arnold Arboretum.
He and Belgian horticulturist J. Hers planned to edit Flora of China, but the plan was halted by the dismissal of the department.
Later, Hers wrote Directory of Longhai Area Plants. These two years of exploring and plant collecting are described in Farrer"s "On the Eaves of the World" (2 vols) (1917), and Farrer"s posthumous "The Rainbow Bridge (1921).
