Ruscus aculeatus
- Several photographs of Butcher’s Broom and the identifying features of the plant.
- http://www.plant-identification.co.uk/skye/liliaceae/ruscus-aculeatus.htm

Ruscus hypoglossum
- Offers general information, classification and historical data.
- http://florawww.eeb.uconn.edu/acc_num/198500092.html