Definition of undershrub in English:
Another term for subshrub.
- He proposed a system of classification in four categories: trees, shrubs, undershrubs, herbs.
- They are small annuals or undershrubs, with small green flowers crowding along the stems intermixed with leaves.
- Varieties of this perennial undershrub have woody and fibrous roots, with numerous round, hard, and branched stems, usually 4 to 8 inches long.