"Double-flowered" describes varieties of flowers with extra petals, often containing flowers within flowers.[1][2] The double-flowered trait is often noted alongside the scientific name with the abbreviation fl. pl. (flore pleno, a Latin ablative form meaning "with full flower").[3] The first abnormality to be documented in flowers, double flowers are popular varieties of many commercial flower types, including roses, camellias and carnations. In some double-flowered varieties all of the reproductive organs are converted to petals. As a result, they are sexually sterile and must be propagated through cuttings. Many double-flowered plants have little wildlife value as access to the nectaries is typically blocked by the mutation.[4]
- ^ McDonald, Kim (May 10, 2000). "Genes for Unusual 'Flower Within a Flower' are Identified by UCSD Scientists". Biological Sciences, UC San Diego. Archived from the original on 2011-07-20. Retrieved 19 December 2020.
- ^ Cite error: The named reference
meyerowitz1989was invoked but never defined (see the help page). - ^ William Thomas Stearn (2004). Botanical Latin. Timber Press. p. 355. ISBN 978-0-88192-627-9.
- ^ "RHS Plants for Pollinators". Royal Horticultural Society. Retrieved November 11, 2014.