Lonicera morrowii, the Morrow's honeysuckle,[1][2] is a deciduous honeysuckle in the family Caprifoliaceae, native to Japan, Korea, and Northeast China. It is colloquially called "bush honeysuckle" in the United States, and is considered an invasive species.
| Morrow's honeysuckle | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Dipsacales |
| Family: | Caprifoliaceae |
| Genus: | Lonicera |
| Species: | L. morrowii
|
| Binomial name | |
| Lonicera morrowii | |
Description
editIt is a shrub, reaching a height of 2–2.5 m, with oblong leaves 4–6 cm long. It leafs out quite early in the spring, and in North America is commonly the first deciduous shrub with foliage in March. The flowers are white to pale yellow, and the fruit is a dark red berry 7–8 mm diameter containing numerous seeds. The berries, while eaten frequently by birds, are considered poisonous to humans.
Taxonomy
editIn cultivation, Lonicera morrowii has hybridized with other shrubby species of Lonicera. Crossed with L. tatarica, it forms the invasive hybrid L. × bella.[3] It can also hybridize with L. ruprechtiana.[4]
As an invasive species
editMorrow's honeysuckle is confirmed as a highly invasive species in the northeastern United States.[5][6] Morrow's honeysuckle thrives at the edges of forests, roads, or other natural or man-made barriers, but is not limited to them, and is found in both mature and disturbed forests.[7] In some areas, Morrow's honeysuckle is the dominant plant species, especially in areas of disturbed ecological succession. It is suspected that Lonicera morrowii is allelopathic, and may capitalize on disturbed ecological succession by establishing itself and then preventing the growth of plants underneath it.[7] With a sufficiently established thicket of honeysuckle, even other shade-tolerant, invasive species, such as Fortune's spindle have difficulty growing underneath it, whether due to its suspected allelopathic activity or through soil depletion.[8]
Effects on flora and fauna
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Due to its early leafing, Morrow's honeysuckle is particularly harmful to spring ephemerals, flowers that evolved to bloom briefly in the spring before other plants leafed out.[8]
Many cedar waxwings' wax spots in the eastern United States have taken on an unusual orange hue in the last 35 years, a phenomenon that has been attributed to Lonicera morrowii.[9] The chemical involved in this color change is rhodoxanthin, a red dye found in the berries of Morrow's honeysuckle.
References
edit- ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
- ^ NRCS. "Lonicera morrowii". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 26 January 2016.
- ^ Barnes, William J. & Cottam, Grant (1974). "Some Autecological Studies of the Lonicera × bella Complex". Ecology. 55 (1): 40–50. Bibcode:1974Ecol...55...40B. doi:10.2307/1934616. JSTOR 1934616.
- ^ Green, P.S. (1966). "Identification of the Species and Hybrids in the Lonicera tatarica Complex". Journal of the Arnold Arboretum. 47 (1): 75–88. doi:10.5962/p.324689. JSTOR 43781553. S2CID 240345901.
- ^ Distribution map of Lonicera morrowii nps.gov Archived 2008-04-18 at the Wayback Machine
- ^ "Lonicera morrowii". Go Botany. New England Wildflower Society.
- ^ a b "SEEPPC/Bush Honeysuckles". Bugwoodwiki. 20 January 2011. Retrieved 30 November 2023.
- ^ a b "Morrow's honeysuckle | (Lonicera morrowii) | Wisconsin DNR".
- ^ Invasives Plant Pests Literature Collection: Lonicera morrowii utk.edu [permanent dead link]
External links
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