Many of the plants die every year, and prepare at the bottom a soil fit for the growth of a higher order of vegetation, Phragmites, acorus, Sparganium, Rumex, Lythrum, Pedicularis, Spiraea, Polystichum, Comarum, Caltha, etc.
"The Earth as Modified by Human Action"
George P. Marsh
In the Times April 24th, 1856, Dr. Graves wrote commending for the soldiers when landing at Galipoli, and notable to obtain costly quinine, the Sweet Flag-acorus calamas-as their sheet anchor against ague and allied maladies arising from marsh miasmata.
"Herbal Simples Approved for Modern Uses of Cure"
William Thomas Fernie