Ruscus hypoglossum is a small evergreen shrub with a native range from Italy north to Austria and Slovakia and east to Turkey and Crimea. Common names include mouse thorn, spineless butcher's broom and horse tongue lily. The laurel crown of Caesar was made of Ruscus hypoglossum.
The mature plant shrub will eventually reach about 18 inches in height. It has a creeping rootstock and leaf-like phylloclades or flattened stems that are about 3 inches wide to 1½ inches wide tapering at both ends. True leaves are smaller green appendages around the flowers. Small yellow flowers bloom in the axil of a leaf-like bract 1 - 1.5 inches long on upper side of phylloclade. Fruit is a rarely produced red globose berry 0.25 to 0.5 inches wide.
- Halada, Ľ. "Ruscus hypoglossum L. in Slovakia". Thaiszia 4: 183–195. ISSN 1210-0420.
- "USDA GRIN Taxonomy".
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- "Ruscus hypoglossum". University of Connecticut - Ecology and Evolutionary Biology Plant Growth Facilities. Retrieved 19 March 2012.