| Tolmiea menziesii | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Saxifragales |
| Family: | Saxifragaceae |
| Genus: | Tolmiea |
| Species: | T. menziesii
|
| Binomial name | |
| Tolmiea menziesii | |
Tolmiea menziesii (/tɒlˈmiːə mɛnˈziːzi.aɪ/)[1] is a species of flowering plant in the family Saxifragaceae. It is known by the common names youth on age,[2] pick-a-back-plant,[3] piggyback plant, and thousand mothers. It is a perennial plant native to the West Coast of North America, occurring in northern California, Oregon, Washington, British Columbia and southern Alaska. It occurs as a naturalised plant or garden escapee in Scotland, parts of Wales, Northern Ireland and northern and western parts of England.[4]: 120
- ^ Sunset Western Garden Book, 1995:606–607
- ^ USDA, NRCS (n.d.). "Tolmiea menziesii". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 11 December 2015.
- ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
- ^ Blamey, M.; Fitter, R.; Fitter, A (2003). Wild flowers of Britain and Ireland: The Complete Guide to the British and Irish Flora. London: A & C Black. ISBN 978-1408179505.