Cornus obliqua, the blue-fruited dogwood, silky dogwood, or pale dogwood, is a flowering shrub of eastern North America in the dogwood family, Cornaceae.[1][2][3] It is sometimes considered a subspecies of Cornus amomum, which is also known as silky dogwood.[4][5] It was first described in 1820 by Constantine Samuel Rafinesque.[6] It is in the subgenus Kraniopsis.[7]
| Cornus obliqua | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Cornales |
| Family: | Cornaceae |
| Genus: | Cornus |
| Subgenus: | Cornus subg. Kraniopsis |
| Species: | C. obliqua
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| Binomial name | |
| Cornus obliqua Raf.
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| Synonyms | |
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Description
editCornus obliqua is a medium to large shrub that typically grows to a height of 6 to 12 feet (1.8 to 3.7 meters) and has a similar spread. The plant is characterized by its slender, arching stems and oval-shaped leaves. The leaves are simple, opposite, and arranged in an alternate pattern on the stems. They are dark green in color and turn shades of red and purple in the fall, creating a beautiful autumn display.
The most distinctive feature of Cornus obliqua is its small, creamy white flowers. These flowers are borne in flat-topped clusters, known as cymes, and appear in late spring to early summer. The flowers are attractive to pollinators, particularly butterflies and native bees.
Following the flowering period, the plant produces clusters of small, bluish-black drupes that provide food for various wildlife species, including birds and small mammals.[8]
Distribution and habitat
editSilky dogwood is native to a wide range of regions in eastern North America, spanning from eastern Canada to Florida and west to Texas. It can be found in various types of wetlands, including swamps, bogs, and riparian areas. Cornus obliqua is well adapted to wet conditions and often serves as a valuable species for stabilizing soil along streambanks and preventing erosion.
Ecological importance
editThe ecological significance of Cornus obliqua lies in its ability to provide habitat and food for a diverse range of wildlife. The dense shrubbery and the fruit of the plant offer nesting sites and sustenance for many bird species, such as warblers, thrushes, and sparrows. Additionally, the shrub's cover is suitable for various small mammals and amphibians.
In addition to its importance in wildlife habitat, silky dogwood plays a vital role in wetland restoration and erosion control projects. Its extensive root system helps prevent soil erosion, and it contributes to the overall health and stability of wetland ecosystems.
Landscaping and horticultural use
editCornus obliqu is often employed in landscaping for its aesthetic appeal. It is utilized in a variety of settings, including naturalized plantings, rain gardens, and wildlife gardens. Its striking flowers, colorful foliage, and attractive fruit make it a popular choice for adding visual interest to gardens and landscapes. The plant is relatively low maintenance, making it suitable for both amateur and experienced gardeners.[9]
Conservation status
editAs a native species with a broad distribution, silky dogwood is not currently considered threatened or endangered. However, the destruction and degradation of wetland habitats through urban development and other activities can negatively impact its populations. Conservation efforts to protect and restore wetlands are important for ensuring the continued presence of Cornus obliqua in the wild.[10]
References
edit- ^ Wilhelm, Gerould; Rericha, Laura (2017). Flora of the Chicago Region: A Floristic and Ecological Synthesis. Indiana Academy of Sciences.
- ^ Murrell, Zack E.; Poindexter, Derick B. (2002). "Cornus obliqua". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 23. New York and Oxford: Oxford University Press. Retrieved 18 January 2019 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
- ^ NRCS. "Cornus obliqua". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 18 January 2019.
- ^ "Cornus obliqua". Plants of the World Online. Royal Botanical Gardens Kew. Retrieved 18 January 2019.
- ^ NRCS. "Cornus amomum". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 18 January 2019.
- ^ "Cornus obliqua". ipni.org. International Plant Names Index. Retrieved 18 January 2019.
- ^ Zhiang, Qiu-Yun; Thomas, David T.; Zhang, Wenheng; Manchester, Steven R.; Murrell, Zack (2006). "Species level phylogeny of the genus Cornus (Cornaceae) based on molecular and morphological evidence—implications for taxonomy and Tertiary intercontinental migration". Taxon. 55 (1).
- ^ "USDA Plants Database". Retrieved 2023-10-16.
- ^ "Lady Bird Johnson Wildflower Center". Retrieved 2023-10-16.
- ^ "Missouri Botanical Garden". Retrieved 2023-10-16.