- Potter, 1902: A Compend of Materia Medica
- Sayre, 1917: A Manual of Organic Materia Medica
- Remington and Wood, 1918: the US Dispensatory
- Boericke, 1901: Materia Medica: the Tinctures
- King's American Dispensatory, 1898
It gladdens a heart in need . . .
This is a plant that I've not yet used as a physiological medicinal. Yet, to gaze at its simple elegance and inhale its mighty fragrance is, without doubt or question, medicine for the heart.