Glossary of "A Botanist's Vocabulary" by Pell & Angell (2016)
- 1. method of propagation in which a perennial plant (or more commonly, a clump of perennial plant clones) is physically split into two or more plants; 2. taxonomic rank above class and below kingdom, plant equivalent to phylum for animals, plant division names end in "-ophyta".
- Pell, S. K. & Angell, B. 2016. A Botanist's Vocabulary: 1300 Terms Explained and Illustrated. 226 pp. Timber Press, Portland.